Cross-version Extension for R4.SubstanceSpecification for use in FHIR R4B - Definitions - FHIR Cross-Version Extensions package for FHIR R4B from FHIR R4 v0.0.1-snapshot-2

FHIR Cross-Version Extensions package for FHIR R4B from FHIR R4 - Version 0.0.1-snapshot-2. See the Directory of published versions

Extension: Ext_R4_SubstanceSpecification - Detailed Descriptions

Page standards status: Informative

Maturity Level: 0

Definitions for the ext-R4-SubstanceSpecification extension.

Differential Elements Table
Key Elements Table
Snapshot Elements Table

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition	This cross-version extension represents SubstanceSpecification from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The detailed description of a substance, typically at a level beyond what is used for prescribing
Control	0..*
2. Extension.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
4. Extension.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	High level categorization, e.g. polymer or nucleic acid
Control	0..1
6. Extension.extension:type.url
Control	1..1
Fixed Value	`type`
8. Extension.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	High level categorization, e.g. polymer or nucleic acid
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
10. Extension.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Status of substance within the catalogue e.g. approved
Control	0..1
12. Extension.extension:status.url
Control	1..1
Fixed Value	`status`
14. Extension.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Status of substance within the catalogue e.g. approved
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
16. Extension.extension:domain
Slice Name	domain
Definition	This cross-version extension represents SubstanceSpecification.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If the substance applies to only human or veterinary use
Control	0..1
18. Extension.extension:domain.url
Control	1..1
Fixed Value	`domain`
20. Extension.extension:domain.value[x]
Definition	This cross-version extension represents SubstanceSpecification.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If the substance applies to only human or veterinary use
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
22. Extension.extension:description
Slice Name	description
Definition	This cross-version extension represents SubstanceSpecification.description from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual description of the substance
Control	0..1
24. Extension.extension:description.url
Control	1..1
Fixed Value	`description`
26. Extension.extension:description.value[x]
Definition	This cross-version extension represents SubstanceSpecification.description from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual description of the substance
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
28. Extension.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..*
30. Extension.extension:source.url
Control	1..1
Fixed Value	`source`
32. Extension.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
34. Extension.extension:comment
Slice Name	comment
Definition	This cross-version extension represents SubstanceSpecification.comment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual comment about this record of a substance
Control	0..1
36. Extension.extension:comment.url
Control	1..1
Fixed Value	`comment`
38. Extension.extension:comment.value[x]
Definition	This cross-version extension represents SubstanceSpecification.comment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual comment about this record of a substance
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
40. Extension.extension:moiety
Slice Name	moiety
Definition	This cross-version extension represents SubstanceSpecification.moiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Moiety, for structural modifications
Control	0..*
42. Extension.extension:moiety.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
44. Extension.extension:moiety.extension:role
Slice Name	role
Definition	This cross-version extension represents SubstanceSpecification.moiety.role from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Role that the moiety is playing
Control	0..1
46. Extension.extension:moiety.extension:role.url
Control	1..1
Fixed Value	`role`
48. Extension.extension:moiety.extension:role.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.role from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Role that the moiety is playing
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
50. Extension.extension:moiety.extension:identifier
Slice Name	identifier
Definition	This cross-version extension represents SubstanceSpecification.moiety.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Identifier by which this moiety substance is known
Control	0..1
52. Extension.extension:moiety.extension:identifier.url
Control	1..1
Fixed Value	`identifier`
54. Extension.extension:moiety.extension:identifier.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Identifier by which this moiety substance is known
Type	Identifier
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
56. Extension.extension:moiety.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.moiety.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual name for this moiety substance
Control	0..1
58. Extension.extension:moiety.extension:name.url
Control	1..1
Fixed Value	`name`
60. Extension.extension:moiety.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual name for this moiety substance
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
62. Extension.extension:moiety.extension:stereochemistry
Slice Name	stereochemistry
Definition	This cross-version extension represents SubstanceSpecification.moiety.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry type
Control	0..1
64. Extension.extension:moiety.extension:stereochemistry.url
Control	1..1
Fixed Value	`stereochemistry`
66. Extension.extension:moiety.extension:stereochemistry.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry type
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
68. Extension.extension:moiety.extension:opticalActivity
Slice Name	opticalActivity
Definition	This cross-version extension represents SubstanceSpecification.moiety.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity type
Control	0..1
70. Extension.extension:moiety.extension:opticalActivity.url
Control	1..1
Fixed Value	`opticalActivity`
72. Extension.extension:moiety.extension:opticalActivity.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity type
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
74. Extension.extension:moiety.extension:molecularFormula
Slice Name	molecularFormula
Definition	This cross-version extension represents SubstanceSpecification.moiety.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formula
Control	0..1
76. Extension.extension:moiety.extension:molecularFormula.url
Control	1..1
Fixed Value	`molecularFormula`
78. Extension.extension:moiety.extension:molecularFormula.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formula
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
80. Extension.extension:moiety.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this moiety
Control	0..1
82. Extension.extension:moiety.extension:amount[x].url
Control	1..1
Fixed Value	`amount[x]`
84. Extension.extension:moiety.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this moiety
Type	Choice of: Quantity, string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
86. Extension.extension:moiety.url
Control	1..1
Fixed Value	`moiety`
88. Extension.extension:property
Slice Name	property
Definition	This cross-version extension represents SubstanceSpecification.property from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	General specifications for this substance, including how it is related to other substances
Control	0..*
90. Extension.extension:property.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
92. Extension.extension:property.extension:category
Slice Name	category
Definition	This cross-version extension represents SubstanceSpecification.property.category from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A category for this property, e.g. Physical, Chemical, Enzymatic
Control	0..1
94. Extension.extension:property.extension:category.url
Control	1..1
Fixed Value	`category`
96. Extension.extension:property.extension:category.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.category from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A category for this property, e.g. Physical, Chemical, Enzymatic
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
98. Extension.extension:property.extension:code
Slice Name	code
Definition	This cross-version extension represents SubstanceSpecification.property.code from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Property type e.g. viscosity, pH, isoelectric point
Control	0..1
100. Extension.extension:property.extension:code.url
Control	1..1
Fixed Value	`code`
102. Extension.extension:property.extension:code.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.code from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Property type e.g. viscosity, pH, isoelectric point
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
104. Extension.extension:property.extension:parameters
Slice Name	parameters
Definition	This cross-version extension represents SubstanceSpecification.property.parameters from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Parameters that were used in the measurement of a property (e.g. for viscosity: measured at 20C with a pH of 7.1)
Control	0..1
106. Extension.extension:property.extension:parameters.url
Control	1..1
Fixed Value	`parameters`
108. Extension.extension:property.extension:parameters.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.parameters from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Parameters that were used in the measurement of a property (e.g. for viscosity: measured at 20C with a pH of 7.1)
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
110. Extension.extension:property.extension:definingSubstance[x]
Slice Name	definingSubstance[x]
Definition	This cross-version extension represents SubstanceSpecification.property.definingSubstance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A substance upon which a defining property depends (e.g. for solubility: in water, in alcohol)
Control	0..1
112. Extension.extension:property.extension:definingSubstance[x].url
Control	1..1
Fixed Value	`definingSubstance[x]`
114. Extension.extension:property.extension:definingSubstance[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.definingSubstance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A substance upon which a defining property depends (e.g. for solubility: in water, in alcohol)
Type	Choice of: Reference, CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
116. Extension.extension:property.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.property.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this property
Control	0..1
118. Extension.extension:property.extension:amount[x].url
Control	1..1
Fixed Value	`amount[x]`
120. Extension.extension:property.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this property
Type	Choice of: Quantity, string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
122. Extension.extension:property.url
Control	1..1
Fixed Value	`property`
124. Extension.extension:referenceInformation
Slice Name	referenceInformation
Definition	This cross-version extension represents SubstanceSpecification.referenceInformation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	General information detailing this substance
Control	0..1
126. Extension.extension:referenceInformation.url
Control	1..1
Fixed Value	`referenceInformation`
128. Extension.extension:referenceInformation.value[x]
Definition	This cross-version extension represents SubstanceSpecification.referenceInformation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	General information detailing this substance
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
130. Extension.extension:structure
Slice Name	structure
Definition	This cross-version extension represents SubstanceSpecification.structure from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Structural information
Control	0..1
132. Extension.extension:structure.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
134. Extension.extension:structure.extension:stereochemistry
Slice Name	stereochemistry
Definition	This cross-version extension represents SubstanceSpecification.structure.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry type
Control	0..1
136. Extension.extension:structure.extension:stereochemistry.url
Control	1..1
Fixed Value	`stereochemistry`
138. Extension.extension:structure.extension:stereochemistry.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry type
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
140. Extension.extension:structure.extension:opticalActivity
Slice Name	opticalActivity
Definition	This cross-version extension represents SubstanceSpecification.structure.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity type
Control	0..1
142. Extension.extension:structure.extension:opticalActivity.url
Control	1..1
Fixed Value	`opticalActivity`
144. Extension.extension:structure.extension:opticalActivity.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity type
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
146. Extension.extension:structure.extension:molecularFormula
Slice Name	molecularFormula
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formula
Control	0..1
148. Extension.extension:structure.extension:molecularFormula.url
Control	1..1
Fixed Value	`molecularFormula`
150. Extension.extension:structure.extension:molecularFormula.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formula
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
152. Extension.extension:structure.extension:molecularFormulaByMoiety
Slice Name	molecularFormulaByMoiety
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormulaByMoiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Specified per moiety according to the Hill system, i.e. first C, then H, then alphabetical, each moiety separated by a dot
Control	0..1
154. Extension.extension:structure.extension:molecularFormulaByMoiety.url
Control	1..1
Fixed Value	`molecularFormulaByMoiety`
156. Extension.extension:structure.extension:molecularFormulaByMoiety.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormulaByMoiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Specified per moiety according to the Hill system, i.e. first C, then H, then alphabetical, each moiety separated by a dot
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
158. Extension.extension:structure.extension:isotope
Slice Name	isotope
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Applicable for single substances that contain a radionuclide or a non-natural isotopic ratio
Control	0..*
160. Extension.extension:structure.extension:isotope.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
162. Extension.extension:structure.extension:isotope.extension:identifier
Slice Name	identifier
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance identifier for each non-natural or radioisotope
Control	0..1
164. Extension.extension:structure.extension:isotope.extension:identifier.url
Control	1..1
Fixed Value	`identifier`
166. Extension.extension:structure.extension:isotope.extension:identifier.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance identifier for each non-natural or radioisotope
Type	Identifier
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
168. Extension.extension:structure.extension:isotope.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance name for each non-natural or radioisotope
Control	0..1
170. Extension.extension:structure.extension:isotope.extension:name.url
Control	1..1
Fixed Value	`name`
172. Extension.extension:structure.extension:isotope.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance name for each non-natural or radioisotope
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
174. Extension.extension:structure.extension:isotope.extension:substitution
Slice Name	substitution
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.substitution from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of isotopic substitution present in a single substance
Control	0..1
176. Extension.extension:structure.extension:isotope.extension:substitution.url
Control	1..1
Fixed Value	`substitution`
178. Extension.extension:structure.extension:isotope.extension:substitution.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.substitution from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of isotopic substitution present in a single substance
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
180. Extension.extension:structure.extension:isotope.extension:halfLife
Slice Name	halfLife
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.halfLife from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Half life - for a non-natural nuclide
Control	0..1
182. Extension.extension:structure.extension:isotope.extension:halfLife.url
Control	1..1
Fixed Value	`halfLife`
184. Extension.extension:structure.extension:isotope.extension:halfLife.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.halfLife from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Half life - for a non-natural nuclide
Type	Quantity
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
186. Extension.extension:structure.extension:isotope.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)
Control	0..1
188. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
190. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method
Slice Name	method
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.method from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The method by which the molecular weight was determined
Control	0..1
192. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method.url
Control	1..1
Fixed Value	`method`
194. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.method from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The method by which the molecular weight was determined
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
196. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Type of molecular weight such as exact, average (also known as. number average), weight average
Control	0..1
198. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type.url
Control	1..1
Fixed Value	`type`
200. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Type of molecular weight such as exact, average (also known as. number average), weight average
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
202. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount
Slice Name	amount
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.amount from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field
Control	0..1
204. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount.url
Control	1..1
Fixed Value	`amount`
206. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.amount from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field
Type	Quantity
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
208. Extension.extension:structure.extension:isotope.extension:molecularWeight.url
Control	1..1
Fixed Value	`molecularWeight`
210. Extension.extension:structure.extension:isotope.url
Control	1..1
Fixed Value	`isotope`
212. Extension.extension:structure.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)
Control	0..1
214. Extension.extension:structure.extension:molecularWeight.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
216. Extension.extension:structure.extension:molecularWeight.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.structure.molecularWeight from FHIR R4
Short	Data type name for SubstanceSpecification.structure.molecularWeight from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
218. Extension.extension:structure.extension:molecularWeight.extension:_datatype.value[x]
Comments	Must be: SubstanceSpecification.structure.isotope.molecularWeight
Control	1..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Fixed Value	`SubstanceSpecification.structure.isotope.molecularWeight`
220. Extension.extension:structure.extension:molecularWeight.url
Control	1..1
Fixed Value	`molecularWeight`
222. Extension.extension:structure.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.structure.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..*
224. Extension.extension:structure.extension:source.url
Control	1..1
Fixed Value	`source`
226. Extension.extension:structure.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
228. Extension.extension:structure.extension:representation
Slice Name	representation
Definition	This cross-version extension represents SubstanceSpecification.structure.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular structural representation
Control	0..*
230. Extension.extension:structure.extension:representation.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
232. Extension.extension:structure.extension:representation.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of structure (e.g. Full, Partial, Representative)
Control	0..1
234. Extension.extension:structure.extension:representation.extension:type.url
Control	1..1
Fixed Value	`type`
236. Extension.extension:structure.extension:representation.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of structure (e.g. Full, Partial, Representative)
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
238. Extension.extension:structure.extension:representation.extension:representation
Slice Name	representation
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The structural representation as text string in a format e.g. InChI, SMILES, MOLFILE, CDX
Control	0..1
240. Extension.extension:structure.extension:representation.extension:representation.url
Control	1..1
Fixed Value	`representation`
242. Extension.extension:structure.extension:representation.extension:representation.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The structural representation as text string in a format e.g. InChI, SMILES, MOLFILE, CDX
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
244. Extension.extension:structure.extension:representation.extension:attachment
Slice Name	attachment
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.attachment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An attached file with the structural representation
Control	0..1
246. Extension.extension:structure.extension:representation.extension:attachment.url
Control	1..1
Fixed Value	`attachment`
248. Extension.extension:structure.extension:representation.extension:attachment.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.attachment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An attached file with the structural representation
Type	Attachment
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
250. Extension.extension:structure.extension:representation.url
Control	1..1
Fixed Value	`representation`
252. Extension.extension:structure.url
Control	1..1
Fixed Value	`structure`
254. Extension.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Names applicable to this substance
Control	0..*
256. Extension.extension:name.extension
Control	1..*
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
258. Extension.extension:name.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.name.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The actual name
Control	1..1
260. Extension.extension:name.extension:name.url
Control	1..1
Fixed Value	`name`
262. Extension.extension:name.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The actual name
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
264. Extension.extension:name.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.name.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Name type
Control	0..1
266. Extension.extension:name.extension:type.url
Control	1..1
Fixed Value	`type`
268. Extension.extension:name.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Name type
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
270. Extension.extension:name.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.name.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the name
Control	0..1
272. Extension.extension:name.extension:status.url
Control	1..1
Fixed Value	`status`
274. Extension.extension:name.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the name
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
276. Extension.extension:name.extension:preferred
Slice Name	preferred
Definition	This cross-version extension represents SubstanceSpecification.name.preferred from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If this is the preferred name for this substance
Control	0..1
278. Extension.extension:name.extension:preferred.url
Control	1..1
Fixed Value	`preferred`
280. Extension.extension:name.extension:preferred.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.preferred from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If this is the preferred name for this substance
Type	boolean
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
282. Extension.extension:name.extension:language
Slice Name	language
Definition	This cross-version extension represents SubstanceSpecification.name.language from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Language of the name
Control	0..*
284. Extension.extension:name.extension:language.url
Control	1..1
Fixed Value	`language`
286. Extension.extension:name.extension:language.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.language from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Language of the name
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
288. Extension.extension:name.extension:domain
Slice Name	domain
Definition	This cross-version extension represents SubstanceSpecification.name.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The use context of this name for example if there is a different name a drug active ingredient as opposed to a food colour additive
Control	0..*
290. Extension.extension:name.extension:domain.url
Control	1..1
Fixed Value	`domain`
292. Extension.extension:name.extension:domain.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The use context of this name for example if there is a different name a drug active ingredient as opposed to a food colour additive
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
294. Extension.extension:name.extension:jurisdiction
Slice Name	jurisdiction
Definition	This cross-version extension represents SubstanceSpecification.name.jurisdiction from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The jurisdiction where this name applies
Control	0..*
296. Extension.extension:name.extension:jurisdiction.url
Control	1..1
Fixed Value	`jurisdiction`
298. Extension.extension:name.extension:jurisdiction.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.jurisdiction from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The jurisdiction where this name applies
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
300. Extension.extension:name.extension:synonym
Slice Name	synonym
Definition	This cross-version extension represents SubstanceSpecification.name.synonym from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A synonym of this name
Control	0..*
302. Extension.extension:name.extension:synonym.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
304. Extension.extension:name.extension:synonym.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.name.synonym from FHIR R4
Short	Data type name for SubstanceSpecification.name.synonym from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
306. Extension.extension:name.extension:synonym.extension:_datatype.value[x]
Comments	Must be: SubstanceSpecification.name
Control	1..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Fixed Value	`SubstanceSpecification.name`
308. Extension.extension:name.extension:synonym.url
Control	1..1
Fixed Value	`synonym`
310. Extension.extension:name.extension:translation
Slice Name	translation
Definition	This cross-version extension represents SubstanceSpecification.name.translation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A translation for this name
Control	0..*
312. Extension.extension:name.extension:translation.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
314. Extension.extension:name.extension:translation.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.name.translation from FHIR R4
Short	Data type name for SubstanceSpecification.name.translation from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
316. Extension.extension:name.extension:translation.extension:_datatype.value[x]
Comments	Must be: SubstanceSpecification.name
Control	1..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Fixed Value	`SubstanceSpecification.name`
318. Extension.extension:name.extension:translation.url
Control	1..1
Fixed Value	`translation`
320. Extension.extension:name.extension:official
Slice Name	official
Definition	This cross-version extension represents SubstanceSpecification.name.official from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Details of the official nature of this name
Control	0..*
322. Extension.extension:name.extension:official.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
324. Extension.extension:name.extension:official.extension:authority
Slice Name	authority
Definition	This cross-version extension represents SubstanceSpecification.name.official.authority from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Which authority uses this official name
Control	0..1
326. Extension.extension:name.extension:official.extension:authority.url
Control	1..1
Fixed Value	`authority`
328. Extension.extension:name.extension:official.extension:authority.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.authority from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Which authority uses this official name
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
330. Extension.extension:name.extension:official.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.name.official.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the official name
Control	0..1
332. Extension.extension:name.extension:official.extension:status.url
Control	1..1
Fixed Value	`status`
334. Extension.extension:name.extension:official.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the official name
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
336. Extension.extension:name.extension:official.extension:date
Slice Name	date
Definition	This cross-version extension represents SubstanceSpecification.name.official.date from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Date of official name change
Control	0..1
338. Extension.extension:name.extension:official.extension:date.url
Control	1..1
Fixed Value	`date`
340. Extension.extension:name.extension:official.extension:date.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.date from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Date of official name change
Type	dateTime
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
342. Extension.extension:name.extension:official.url
Control	1..1
Fixed Value	`official`
344. Extension.extension:name.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.name.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..*
346. Extension.extension:name.extension:source.url
Control	1..1
Fixed Value	`source`
348. Extension.extension:name.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
350. Extension.extension:name.url
Control	1..1
Fixed Value	`name`
352. Extension.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)
Control	0..*
354. Extension.extension:molecularWeight.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
356. Extension.extension:molecularWeight.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.molecularWeight from FHIR R4
Short	Data type name for SubstanceSpecification.molecularWeight from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
358. Extension.extension:molecularWeight.extension:_datatype.value[x]
Comments	Must be: SubstanceSpecification.structure.isotope.molecularWeight
Control	1..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Fixed Value	`SubstanceSpecification.structure.isotope.molecularWeight`
360. Extension.extension:molecularWeight.url
Control	1..1
Fixed Value	`molecularWeight`
362. Extension.extension:relationship
Slice Name	relationship
Definition	This cross-version extension represents SubstanceSpecification.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A link between this substance and another, with details of the relationship
Control	0..*
364. Extension.extension:relationship.extension
Control	0..*
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
366. Extension.extension:relationship.extension:substance[x]
Slice Name	substance[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.substance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A pointer to another substance, as a resource or just a representational code
Control	0..1
368. Extension.extension:relationship.extension:substance[x].url
Control	1..1
Fixed Value	`substance[x]`
370. Extension.extension:relationship.extension:substance[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.substance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A pointer to another substance, as a resource or just a representational code
Type	Choice of: Reference, CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
372. Extension.extension:relationship.extension:relationship
Slice Name	relationship
Definition	This cross-version extension represents SubstanceSpecification.relationship.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example "salt to parent", "active moiety", "starting material"
Control	0..1
374. Extension.extension:relationship.extension:relationship.url
Control	1..1
Fixed Value	`relationship`
376. Extension.extension:relationship.extension:relationship.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example "salt to parent", "active moiety", "starting material"
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
378. Extension.extension:relationship.extension:isDefining
Slice Name	isDefining
Definition	This cross-version extension represents SubstanceSpecification.relationship.isDefining from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example where an enzyme strongly bonds with a particular substance, this is a defining relationship for that enzyme, out of several possible substance relationships
Control	0..1
380. Extension.extension:relationship.extension:isDefining.url
Control	1..1
Fixed Value	`isDefining`
382. Extension.extension:relationship.extension:isDefining.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.isDefining from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example where an enzyme strongly bonds with a particular substance, this is a defining relationship for that enzyme, out of several possible substance relationships
Type	boolean
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
384. Extension.extension:relationship.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A numeric factor for the relationship, for instance to express that the salt of a substance has some percentage of the active substance in relation to some other
Control	0..1
386. Extension.extension:relationship.extension:amount[x].url
Control	1..1
Fixed Value	`amount[x]`
388. Extension.extension:relationship.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A numeric factor for the relationship, for instance to express that the salt of a substance has some percentage of the active substance in relation to some other
Type	Choice of: Quantity, Range, Ratio, string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
390. Extension.extension:relationship.extension:amountRatioLowLimit
Slice Name	amountRatioLowLimit
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountRatioLowLimit from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For use when the numeric
Control	0..1
392. Extension.extension:relationship.extension:amountRatioLowLimit.url
Control	1..1
Fixed Value	`amountRatioLowLimit`
394. Extension.extension:relationship.extension:amountRatioLowLimit.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountRatioLowLimit from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For use when the numeric
Type	Ratio
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
396. Extension.extension:relationship.extension:amountType
Slice Name	amountType
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountType from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An operator for the amount, for example "average", "approximately", "less than"
Control	0..1
398. Extension.extension:relationship.extension:amountType.url
Control	1..1
Fixed Value	`amountType`
400. Extension.extension:relationship.extension:amountType.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountType from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An operator for the amount, for example "average", "approximately", "less than"
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
402. Extension.extension:relationship.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.relationship.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..*
404. Extension.extension:relationship.extension:source.url
Control	1..1
Fixed Value	`source`
406. Extension.extension:relationship.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
408. Extension.extension:relationship.url
Control	1..1
Fixed Value	`relationship`
410. Extension.extension:nucleicAcid
Slice Name	nucleicAcid
Definition	This cross-version extension represents SubstanceSpecification.nucleicAcid from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to nucleic acids
Control	0..1
412. Extension.extension:nucleicAcid.url
Control	1..1
Fixed Value	`nucleicAcid`
414. Extension.extension:nucleicAcid.value[x]
Definition	This cross-version extension represents SubstanceSpecification.nucleicAcid from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to nucleic acids
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
416. Extension.extension:polymer
Slice Name	polymer
Definition	This cross-version extension represents SubstanceSpecification.polymer from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to polymers
Control	0..1
418. Extension.extension:polymer.url
Control	1..1
Fixed Value	`polymer`
420. Extension.extension:polymer.value[x]
Definition	This cross-version extension represents SubstanceSpecification.polymer from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to polymers
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
422. Extension.extension:protein
Slice Name	protein
Definition	This cross-version extension represents SubstanceSpecification.protein from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to proteins
Control	0..1
424. Extension.extension:protein.url
Control	1..1
Fixed Value	`protein`
426. Extension.extension:protein.value[x]
Definition	This cross-version extension represents SubstanceSpecification.protein from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to proteins
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
428. Extension.extension:sourceMaterial
Slice Name	sourceMaterial
Definition	This cross-version extension represents SubstanceSpecification.sourceMaterial from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Material or taxonomic/anatomical source for the substance
Control	0..1
430. Extension.extension:sourceMaterial.url
Control	1..1
Fixed Value	`sourceMaterial`
432. Extension.extension:sourceMaterial.value[x]
Definition	This cross-version extension represents SubstanceSpecification.sourceMaterial from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Material or taxonomic/anatomical source for the substance
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
434. Extension.url
Control	1..1
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstanceSpecification`

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition	This cross-version extension represents SubstanceSpecification from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Optional Extension Element - found in all resources.
Short	The detailed description of a substance, typically at a level beyond what is used for prescribingOptional Extensions Element
Control	0..* This element is affected by the following invariants: ele-1
Is Modifier	false
Invariants	ele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (`hasValue() or (children().count() > id.count()) or $this is Parameters`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (hasValue() or (children().count() > id.count()) or $this is Parameters) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
2. Extension.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
4. Extension.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	High level categorization, e.g. polymer or nucleic acidAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
6. Extension.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
8. Extension.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	High level categorization, e.g. polymer or nucleic acidValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. Extension.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Status of substance within the catalogue e.g. approvedAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
12. Extension.extension:status.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`status`
14. Extension.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Status of substance within the catalogue e.g. approvedValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
16. Extension.extension:domain
Slice Name	domain
Definition	This cross-version extension represents SubstanceSpecification.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If the substance applies to only human or veterinary useAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
18. Extension.extension:domain.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`domain`
20. Extension.extension:domain.value[x]
Definition	This cross-version extension represents SubstanceSpecification.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	If the substance applies to only human or veterinary useValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. Extension.extension:description
Slice Name	description
Definition	This cross-version extension represents SubstanceSpecification.description from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual description of the substanceAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
24. Extension.extension:description.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`description`
26. Extension.extension:description.value[x]
Definition	This cross-version extension represents SubstanceSpecification.description from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Textual description of the substanceValue of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
28. Extension.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literatureAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
30. Extension.extension:source.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`source`
32. Extension.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Supporting literatureValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
34. Extension.extension:comment
Slice Name	comment
Definition	This cross-version extension represents SubstanceSpecification.comment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual comment about this record of a substanceAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
36. Extension.extension:comment.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`comment`
38. Extension.extension:comment.value[x]
Definition	This cross-version extension represents SubstanceSpecification.comment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Textual comment about this record of a substanceValue of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
40. Extension.extension:moiety
Slice Name	moiety
Definition	This cross-version extension represents SubstanceSpecification.moiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Moiety, for structural modificationsAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
42. Extension.extension:moiety.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
44. Extension.extension:moiety.extension:role
Slice Name	role
Definition	This cross-version extension represents SubstanceSpecification.moiety.role from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Role that the moiety is playingAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
46. Extension.extension:moiety.extension:role.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`role`
48. Extension.extension:moiety.extension:role.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.role from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Role that the moiety is playingValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
50. Extension.extension:moiety.extension:identifier
Slice Name	identifier
Definition	This cross-version extension represents SubstanceSpecification.moiety.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Identifier by which this moiety substance is knownAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
52. Extension.extension:moiety.extension:identifier.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`identifier`
54. Extension.extension:moiety.extension:identifier.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Identifier by which this moiety substance is knownValue of extension
Control	0..1
Type	Identifier, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
56. Extension.extension:moiety.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.moiety.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual name for this moiety substanceAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
58. Extension.extension:moiety.extension:name.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`name`
60. Extension.extension:moiety.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Textual name for this moiety substanceValue of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
62. Extension.extension:moiety.extension:stereochemistry
Slice Name	stereochemistry
Definition	This cross-version extension represents SubstanceSpecification.moiety.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry typeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
64. Extension.extension:moiety.extension:stereochemistry.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`stereochemistry`
66. Extension.extension:moiety.extension:stereochemistry.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Stereochemistry typeValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
68. Extension.extension:moiety.extension:opticalActivity
Slice Name	opticalActivity
Definition	This cross-version extension represents SubstanceSpecification.moiety.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity typeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
70. Extension.extension:moiety.extension:opticalActivity.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`opticalActivity`
72. Extension.extension:moiety.extension:opticalActivity.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Optical activity typeValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
74. Extension.extension:moiety.extension:molecularFormula
Slice Name	molecularFormula
Definition	This cross-version extension represents SubstanceSpecification.moiety.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formulaAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
76. Extension.extension:moiety.extension:molecularFormula.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularFormula`
78. Extension.extension:moiety.extension:molecularFormula.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Molecular formulaValue of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
80. Extension.extension:moiety.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this moietyAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
82. Extension.extension:moiety.extension:amount[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amount[x]`
84. Extension.extension:moiety.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Quantitative value for this moietyValue of extension
Control	0..1
Type	Choice of: Quantity, string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
86. Extension.extension:moiety.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`moiety`
88. Extension.extension:property
Slice Name	property
Definition	This cross-version extension represents SubstanceSpecification.property from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	General specifications for this substance, including how it is related to other substancesAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
90. Extension.extension:property.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
92. Extension.extension:property.extension:category
Slice Name	category
Definition	This cross-version extension represents SubstanceSpecification.property.category from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A category for this property, e.g. Physical, Chemical, EnzymaticAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
94. Extension.extension:property.extension:category.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`category`
96. Extension.extension:property.extension:category.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.category from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	A category for this property, e.g. Physical, Chemical, EnzymaticValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
98. Extension.extension:property.extension:code
Slice Name	code
Definition	This cross-version extension represents SubstanceSpecification.property.code from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Property type e.g. viscosity, pH, isoelectric pointAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
100. Extension.extension:property.extension:code.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`code`
102. Extension.extension:property.extension:code.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.code from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Property type e.g. viscosity, pH, isoelectric pointValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
104. Extension.extension:property.extension:parameters
Slice Name	parameters
Definition	This cross-version extension represents SubstanceSpecification.property.parameters from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Parameters that were used in the measurement of a property (e.g. for viscosity: measured at 20C with a pH of 7.1)Additional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
106. Extension.extension:property.extension:parameters.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`parameters`
108. Extension.extension:property.extension:parameters.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.parameters from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Parameters that were used in the measurement of a property (e.g. for viscosity: measured at 20C with a pH of 7.1)Value of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
110. Extension.extension:property.extension:definingSubstance[x]
Slice Name	definingSubstance[x]
Definition	This cross-version extension represents SubstanceSpecification.property.definingSubstance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A substance upon which a defining property depends (e.g. for solubility: in water, in alcohol)Additional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
112. Extension.extension:property.extension:definingSubstance[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`definingSubstance[x]`
114. Extension.extension:property.extension:definingSubstance[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.definingSubstance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	A substance upon which a defining property depends (e.g. for solubility: in water, in alcohol)Value of extension
Control	0..1
Type	Choice of: Reference, CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
116. Extension.extension:property.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.property.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this propertyAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
118. Extension.extension:property.extension:amount[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amount[x]`
120. Extension.extension:property.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Quantitative value for this propertyValue of extension
Control	0..1
Type	Choice of: Quantity, string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
122. Extension.extension:property.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`property`
124. Extension.extension:referenceInformation
Slice Name	referenceInformation
Definition	This cross-version extension represents SubstanceSpecification.referenceInformation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	General information detailing this substanceAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
126. Extension.extension:referenceInformation.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`referenceInformation`
128. Extension.extension:referenceInformation.value[x]
Definition	This cross-version extension represents SubstanceSpecification.referenceInformation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	General information detailing this substanceValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
130. Extension.extension:structure
Slice Name	structure
Definition	This cross-version extension represents SubstanceSpecification.structure from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Structural informationAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
132. Extension.extension:structure.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
134. Extension.extension:structure.extension:stereochemistry
Slice Name	stereochemistry
Definition	This cross-version extension represents SubstanceSpecification.structure.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry typeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
136. Extension.extension:structure.extension:stereochemistry.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`stereochemistry`
138. Extension.extension:structure.extension:stereochemistry.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Stereochemistry typeValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
140. Extension.extension:structure.extension:opticalActivity
Slice Name	opticalActivity
Definition	This cross-version extension represents SubstanceSpecification.structure.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity typeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
142. Extension.extension:structure.extension:opticalActivity.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`opticalActivity`
144. Extension.extension:structure.extension:opticalActivity.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Optical activity typeValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
146. Extension.extension:structure.extension:molecularFormula
Slice Name	molecularFormula
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formulaAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
148. Extension.extension:structure.extension:molecularFormula.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularFormula`
150. Extension.extension:structure.extension:molecularFormula.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Molecular formulaValue of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
152. Extension.extension:structure.extension:molecularFormulaByMoiety
Slice Name	molecularFormulaByMoiety
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormulaByMoiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Specified per moiety according to the Hill system, i.e. first C, then H, then alphabetical, each moiety separated by a dotAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
154. Extension.extension:structure.extension:molecularFormulaByMoiety.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularFormulaByMoiety`
156. Extension.extension:structure.extension:molecularFormulaByMoiety.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormulaByMoiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Specified per moiety according to the Hill system, i.e. first C, then H, then alphabetical, each moiety separated by a dotValue of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
158. Extension.extension:structure.extension:isotope
Slice Name	isotope
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Applicable for single substances that contain a radionuclide or a non-natural isotopic ratioAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
160. Extension.extension:structure.extension:isotope.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
162. Extension.extension:structure.extension:isotope.extension:identifier
Slice Name	identifier
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance identifier for each non-natural or radioisotopeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
164. Extension.extension:structure.extension:isotope.extension:identifier.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`identifier`
166. Extension.extension:structure.extension:isotope.extension:identifier.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Substance identifier for each non-natural or radioisotopeValue of extension
Control	0..1
Type	Identifier, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
168. Extension.extension:structure.extension:isotope.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance name for each non-natural or radioisotopeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
170. Extension.extension:structure.extension:isotope.extension:name.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`name`
172. Extension.extension:structure.extension:isotope.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Substance name for each non-natural or radioisotopeValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
174. Extension.extension:structure.extension:isotope.extension:substitution
Slice Name	substitution
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.substitution from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of isotopic substitution present in a single substanceAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
176. Extension.extension:structure.extension:isotope.extension:substitution.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`substitution`
178. Extension.extension:structure.extension:isotope.extension:substitution.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.substitution from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The type of isotopic substitution present in a single substanceValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
180. Extension.extension:structure.extension:isotope.extension:halfLife
Slice Name	halfLife
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.halfLife from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Half life - for a non-natural nuclideAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
182. Extension.extension:structure.extension:isotope.extension:halfLife.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`halfLife`
184. Extension.extension:structure.extension:isotope.extension:halfLife.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.halfLife from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Half life - for a non-natural nuclideValue of extension
Control	0..1
Type	Quantity, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
186. Extension.extension:structure.extension:isotope.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)Additional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
188. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
190. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method
Slice Name	method
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.method from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The method by which the molecular weight was determinedAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
192. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`method`
194. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.method from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The method by which the molecular weight was determinedValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
196. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Type of molecular weight such as exact, average (also known as. number average), weight averageAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
198. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
200. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Type of molecular weight such as exact, average (also known as. number average), weight averageValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
202. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount
Slice Name	amount
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.amount from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this fieldAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
204. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amount`
206. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.amount from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this fieldValue of extension
Control	0..1
Type	Quantity, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
208. Extension.extension:structure.extension:isotope.extension:molecularWeight.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularWeight`
210. Extension.extension:structure.extension:isotope.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`isotope`
212. Extension.extension:structure.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)Additional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
214. Extension.extension:structure.extension:molecularWeight.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
216. Extension.extension:structure.extension:molecularWeight.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.structure.molecularWeight from FHIR R4
Short	Data type name for SubstanceSpecification.structure.molecularWeight from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
218. Extension.extension:structure.extension:molecularWeight.extension:_datatype.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..0*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
220. Extension.extension:structure.extension:molecularWeight.extension:_datatype.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/StructureDefinition/_datatype`
222. Extension.extension:structure.extension:molecularWeight.extension:_datatype.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Comments	Must be: SubstanceSpecification.structure.isotope.molecularWeight
Control	10..1 This element is affected by the following invariants: ext-1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Fixed Value	`SubstanceSpecification.structure.isotope.molecularWeight`
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
224. Extension.extension:structure.extension:molecularWeight.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularWeight`
226. Extension.extension:structure.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.structure.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literatureAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
228. Extension.extension:structure.extension:source.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`source`
230. Extension.extension:structure.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Supporting literatureValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
232. Extension.extension:structure.extension:representation
Slice Name	representation
Definition	This cross-version extension represents SubstanceSpecification.structure.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular structural representationAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
234. Extension.extension:structure.extension:representation.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
236. Extension.extension:structure.extension:representation.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of structure (e.g. Full, Partial, Representative)Additional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
238. Extension.extension:structure.extension:representation.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
240. Extension.extension:structure.extension:representation.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The type of structure (e.g. Full, Partial, Representative)Value of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
242. Extension.extension:structure.extension:representation.extension:representation
Slice Name	representation
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The structural representation as text string in a format e.g. InChI, SMILES, MOLFILE, CDXAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
244. Extension.extension:structure.extension:representation.extension:representation.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`representation`
246. Extension.extension:structure.extension:representation.extension:representation.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The structural representation as text string in a format e.g. InChI, SMILES, MOLFILE, CDXValue of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
248. Extension.extension:structure.extension:representation.extension:attachment
Slice Name	attachment
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.attachment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An attached file with the structural representationAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
250. Extension.extension:structure.extension:representation.extension:attachment.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`attachment`
252. Extension.extension:structure.extension:representation.extension:attachment.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.attachment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	An attached file with the structural representationValue of extension
Control	0..1
Type	Attachment, date, Address, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
254. Extension.extension:structure.extension:representation.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`representation`
256. Extension.extension:structure.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`structure`
258. Extension.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Names applicable to this substanceAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
260. Extension.extension:name.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	10..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
262. Extension.extension:name.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.name.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The actual nameAdditional content defined by implementations
Control	10..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
264. Extension.extension:name.extension:name.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`name`
266. Extension.extension:name.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The actual nameValue of extension
Control	0..1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
268. Extension.extension:name.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.name.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Name typeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
270. Extension.extension:name.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
272. Extension.extension:name.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Name typeValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
274. Extension.extension:name.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.name.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the nameAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
276. Extension.extension:name.extension:status.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`status`
278. Extension.extension:name.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The status of the nameValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
280. Extension.extension:name.extension:preferred
Slice Name	preferred
Definition	This cross-version extension represents SubstanceSpecification.name.preferred from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If this is the preferred name for this substanceAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
282. Extension.extension:name.extension:preferred.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`preferred`
284. Extension.extension:name.extension:preferred.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.preferred from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	If this is the preferred name for this substanceValue of extension
Control	0..1
Type	boolean, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
286. Extension.extension:name.extension:language
Slice Name	language
Definition	This cross-version extension represents SubstanceSpecification.name.language from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Language of the nameAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
288. Extension.extension:name.extension:language.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`language`
290. Extension.extension:name.extension:language.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.language from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Language of the nameValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
292. Extension.extension:name.extension:domain
Slice Name	domain
Definition	This cross-version extension represents SubstanceSpecification.name.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The use context of this name for example if there is a different name a drug active ingredient as opposed to a food colour additiveAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
294. Extension.extension:name.extension:domain.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`domain`
296. Extension.extension:name.extension:domain.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The use context of this name for example if there is a different name a drug active ingredient as opposed to a food colour additiveValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
298. Extension.extension:name.extension:jurisdiction
Slice Name	jurisdiction
Definition	This cross-version extension represents SubstanceSpecification.name.jurisdiction from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The jurisdiction where this name appliesAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
300. Extension.extension:name.extension:jurisdiction.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`jurisdiction`
302. Extension.extension:name.extension:jurisdiction.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.jurisdiction from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The jurisdiction where this name appliesValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
304. Extension.extension:name.extension:synonym
Slice Name	synonym
Definition	This cross-version extension represents SubstanceSpecification.name.synonym from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A synonym of this nameAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
306. Extension.extension:name.extension:synonym.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
308. Extension.extension:name.extension:synonym.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.name.synonym from FHIR R4
Short	Data type name for SubstanceSpecification.name.synonym from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
310. Extension.extension:name.extension:synonym.extension:_datatype.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..0*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
312. Extension.extension:name.extension:synonym.extension:_datatype.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/StructureDefinition/_datatype`
314. Extension.extension:name.extension:synonym.extension:_datatype.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Comments	Must be: SubstanceSpecification.name
Control	10..1 This element is affected by the following invariants: ext-1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Fixed Value	`SubstanceSpecification.name`
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
316. Extension.extension:name.extension:synonym.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`synonym`
318. Extension.extension:name.extension:translation
Slice Name	translation
Definition	This cross-version extension represents SubstanceSpecification.name.translation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A translation for this nameAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
320. Extension.extension:name.extension:translation.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
322. Extension.extension:name.extension:translation.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.name.translation from FHIR R4
Short	Data type name for SubstanceSpecification.name.translation from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
324. Extension.extension:name.extension:translation.extension:_datatype.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..0*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
326. Extension.extension:name.extension:translation.extension:_datatype.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/StructureDefinition/_datatype`
328. Extension.extension:name.extension:translation.extension:_datatype.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Comments	Must be: SubstanceSpecification.name
Control	10..1 This element is affected by the following invariants: ext-1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Fixed Value	`SubstanceSpecification.name`
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
330. Extension.extension:name.extension:translation.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`translation`
332. Extension.extension:name.extension:official
Slice Name	official
Definition	This cross-version extension represents SubstanceSpecification.name.official from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Details of the official nature of this nameAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
334. Extension.extension:name.extension:official.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
336. Extension.extension:name.extension:official.extension:authority
Slice Name	authority
Definition	This cross-version extension represents SubstanceSpecification.name.official.authority from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Which authority uses this official nameAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
338. Extension.extension:name.extension:official.extension:authority.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`authority`
340. Extension.extension:name.extension:official.extension:authority.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.authority from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Which authority uses this official nameValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
342. Extension.extension:name.extension:official.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.name.official.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the official nameAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
344. Extension.extension:name.extension:official.extension:status.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`status`
346. Extension.extension:name.extension:official.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The status of the official nameValue of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
348. Extension.extension:name.extension:official.extension:date
Slice Name	date
Definition	This cross-version extension represents SubstanceSpecification.name.official.date from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Date of official name changeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
350. Extension.extension:name.extension:official.extension:date.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`date`
352. Extension.extension:name.extension:official.extension:date.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.date from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Date of official name changeValue of extension
Control	0..1
Type	dateTime, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
354. Extension.extension:name.extension:official.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`official`
356. Extension.extension:name.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.name.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literatureAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
358. Extension.extension:name.extension:source.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`source`
360. Extension.extension:name.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Supporting literatureValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
362. Extension.extension:name.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`name`
364. Extension.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)Additional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
366. Extension.extension:molecularWeight.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
368. Extension.extension:molecularWeight.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.molecularWeight from FHIR R4
Short	Data type name for SubstanceSpecification.molecularWeight from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
370. Extension.extension:molecularWeight.extension:_datatype.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..0*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
372. Extension.extension:molecularWeight.extension:_datatype.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/StructureDefinition/_datatype`
374. Extension.extension:molecularWeight.extension:_datatype.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Comments	Must be: SubstanceSpecification.structure.isotope.molecularWeight
Control	10..1 This element is affected by the following invariants: ext-1
Type	string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Fixed Value	`SubstanceSpecification.structure.isotope.molecularWeight`
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
376. Extension.extension:molecularWeight.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularWeight`
378. Extension.extension:relationship
Slice Name	relationship
Definition	This cross-version extension represents SubstanceSpecification.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A link between this substance and another, with details of the relationshipAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
380. Extension.extension:relationship.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and ClosedOpen, and can be differentiated using the following discriminators: value @ url
382. Extension.extension:relationship.extension:substance[x]
Slice Name	substance[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.substance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A pointer to another substance, as a resource or just a representational codeAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
384. Extension.extension:relationship.extension:substance[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`substance[x]`
386. Extension.extension:relationship.extension:substance[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.substance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	A pointer to another substance, as a resource or just a representational codeValue of extension
Control	0..1
Type	Choice of: Reference, CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
388. Extension.extension:relationship.extension:relationship
Slice Name	relationship
Definition	This cross-version extension represents SubstanceSpecification.relationship.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example "salt to parent", "active moiety", "starting material"Additional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
390. Extension.extension:relationship.extension:relationship.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`relationship`
392. Extension.extension:relationship.extension:relationship.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	For example "salt to parent", "active moiety", "starting material"Value of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
394. Extension.extension:relationship.extension:isDefining
Slice Name	isDefining
Definition	This cross-version extension represents SubstanceSpecification.relationship.isDefining from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example where an enzyme strongly bonds with a particular substance, this is a defining relationship for that enzyme, out of several possible substance relationshipsAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
396. Extension.extension:relationship.extension:isDefining.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`isDefining`
398. Extension.extension:relationship.extension:isDefining.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.isDefining from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	For example where an enzyme strongly bonds with a particular substance, this is a defining relationship for that enzyme, out of several possible substance relationshipsValue of extension
Control	0..1
Type	boolean, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
400. Extension.extension:relationship.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A numeric factor for the relationship, for instance to express that the salt of a substance has some percentage of the active substance in relation to some otherAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
402. Extension.extension:relationship.extension:amount[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amount[x]`
404. Extension.extension:relationship.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	A numeric factor for the relationship, for instance to express that the salt of a substance has some percentage of the active substance in relation to some otherValue of extension
Control	0..1
Type	Choice of: Quantity, Range, Ratio, string, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Age, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
406. Extension.extension:relationship.extension:amountRatioLowLimit
Slice Name	amountRatioLowLimit
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountRatioLowLimit from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For use when the numericAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
408. Extension.extension:relationship.extension:amountRatioLowLimit.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amountRatioLowLimit`
410. Extension.extension:relationship.extension:amountRatioLowLimit.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountRatioLowLimit from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	For use when the numericValue of extension
Control	0..1
Type	Ratio, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
412. Extension.extension:relationship.extension:amountType
Slice Name	amountType
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountType from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An operator for the amount, for example "average", "approximately", "less than"Additional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
414. Extension.extension:relationship.extension:amountType.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amountType`
416. Extension.extension:relationship.extension:amountType.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountType from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	An operator for the amount, for example "average", "approximately", "less than"Value of extension
Control	0..1
Type	CodeableConcept, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
418. Extension.extension:relationship.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.relationship.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literatureAdditional content defined by implementations
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
420. Extension.extension:relationship.extension:source.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`source`
422. Extension.extension:relationship.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Supporting literatureValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
424. Extension.extension:relationship.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`relationship`
426. Extension.extension:nucleicAcid
Slice Name	nucleicAcid
Definition	This cross-version extension represents SubstanceSpecification.nucleicAcid from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to nucleic acidsAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
428. Extension.extension:nucleicAcid.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`nucleicAcid`
430. Extension.extension:nucleicAcid.value[x]
Definition	This cross-version extension represents SubstanceSpecification.nucleicAcid from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Data items specific to nucleic acidsValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
432. Extension.extension:polymer
Slice Name	polymer
Definition	This cross-version extension represents SubstanceSpecification.polymer from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to polymersAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
434. Extension.extension:polymer.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`polymer`
436. Extension.extension:polymer.value[x]
Definition	This cross-version extension represents SubstanceSpecification.polymer from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Data items specific to polymersValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
438. Extension.extension:protein
Slice Name	protein
Definition	This cross-version extension represents SubstanceSpecification.protein from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to proteinsAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
440. Extension.extension:protein.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`protein`
442. Extension.extension:protein.value[x]
Definition	This cross-version extension represents SubstanceSpecification.protein from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Data items specific to proteinsValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
444. Extension.extension:sourceMaterial
Slice Name	sourceMaterial
Definition	This cross-version extension represents SubstanceSpecification.sourceMaterial from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Material or taxonomic/anatomical source for the substanceAdditional content defined by implementations
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
446. Extension.extension:sourceMaterial.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`sourceMaterial`
448. Extension.extension:sourceMaterial.value[x]
Definition	This cross-version extension represents SubstanceSpecification.sourceMaterial from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Material or taxonomic/anatomical source for the substanceValue of extension
Control	0..1
Type	Reference, date, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
450. Extension.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstanceSpecification`

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition	This cross-version extension represents SubstanceSpecification from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The detailed description of a substance, typically at a level beyond what is used for prescribing
Control	0..* This element is affected by the following invariants: ele-1
Is Modifier	false
Invariants	ele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (`hasValue() or (children().count() > id.count()) or $this is Parameters`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
2. Extension.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
4. Extension.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
6. Extension.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	High level categorization, e.g. polymer or nucleic acid
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
8. Extension.extension:type.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
10. Extension.extension:type.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
12. Extension.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
14. Extension.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	High level categorization, e.g. polymer or nucleic acid
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
16. Extension.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Status of substance within the catalogue e.g. approved
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
18. Extension.extension:status.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
20. Extension.extension:status.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
22. Extension.extension:status.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`status`
24. Extension.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Status of substance within the catalogue e.g. approved
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
26. Extension.extension:domain
Slice Name	domain
Definition	This cross-version extension represents SubstanceSpecification.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If the substance applies to only human or veterinary use
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
28. Extension.extension:domain.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
30. Extension.extension:domain.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
32. Extension.extension:domain.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`domain`
34. Extension.extension:domain.value[x]
Definition	This cross-version extension represents SubstanceSpecification.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If the substance applies to only human or veterinary use
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
36. Extension.extension:description
Slice Name	description
Definition	This cross-version extension represents SubstanceSpecification.description from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual description of the substance
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
38. Extension.extension:description.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
40. Extension.extension:description.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
42. Extension.extension:description.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`description`
44. Extension.extension:description.value[x]
Definition	This cross-version extension represents SubstanceSpecification.description from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual description of the substance
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
46. Extension.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
48. Extension.extension:source.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
50. Extension.extension:source.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
52. Extension.extension:source.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`source`
54. Extension.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
56. Extension.extension:comment
Slice Name	comment
Definition	This cross-version extension represents SubstanceSpecification.comment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual comment about this record of a substance
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
58. Extension.extension:comment.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
60. Extension.extension:comment.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
62. Extension.extension:comment.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`comment`
64. Extension.extension:comment.value[x]
Definition	This cross-version extension represents SubstanceSpecification.comment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual comment about this record of a substance
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
66. Extension.extension:moiety
Slice Name	moiety
Definition	This cross-version extension represents SubstanceSpecification.moiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Moiety, for structural modifications
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
68. Extension.extension:moiety.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
70. Extension.extension:moiety.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
72. Extension.extension:moiety.extension:role
Slice Name	role
Definition	This cross-version extension represents SubstanceSpecification.moiety.role from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Role that the moiety is playing
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
74. Extension.extension:moiety.extension:role.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
76. Extension.extension:moiety.extension:role.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
78. Extension.extension:moiety.extension:role.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`role`
80. Extension.extension:moiety.extension:role.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.role from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Role that the moiety is playing
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
82. Extension.extension:moiety.extension:identifier
Slice Name	identifier
Definition	This cross-version extension represents SubstanceSpecification.moiety.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Identifier by which this moiety substance is known
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
84. Extension.extension:moiety.extension:identifier.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
86. Extension.extension:moiety.extension:identifier.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
88. Extension.extension:moiety.extension:identifier.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`identifier`
90. Extension.extension:moiety.extension:identifier.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Identifier by which this moiety substance is known
Control	0..1
Type	Identifier
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
92. Extension.extension:moiety.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.moiety.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual name for this moiety substance
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
94. Extension.extension:moiety.extension:name.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
96. Extension.extension:moiety.extension:name.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
98. Extension.extension:moiety.extension:name.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`name`
100. Extension.extension:moiety.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Textual name for this moiety substance
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
102. Extension.extension:moiety.extension:stereochemistry
Slice Name	stereochemistry
Definition	This cross-version extension represents SubstanceSpecification.moiety.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry type
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
104. Extension.extension:moiety.extension:stereochemistry.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
106. Extension.extension:moiety.extension:stereochemistry.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
108. Extension.extension:moiety.extension:stereochemistry.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`stereochemistry`
110. Extension.extension:moiety.extension:stereochemistry.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry type
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
112. Extension.extension:moiety.extension:opticalActivity
Slice Name	opticalActivity
Definition	This cross-version extension represents SubstanceSpecification.moiety.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity type
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
114. Extension.extension:moiety.extension:opticalActivity.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
116. Extension.extension:moiety.extension:opticalActivity.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
118. Extension.extension:moiety.extension:opticalActivity.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`opticalActivity`
120. Extension.extension:moiety.extension:opticalActivity.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity type
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
122. Extension.extension:moiety.extension:molecularFormula
Slice Name	molecularFormula
Definition	This cross-version extension represents SubstanceSpecification.moiety.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formula
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
124. Extension.extension:moiety.extension:molecularFormula.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
126. Extension.extension:moiety.extension:molecularFormula.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
128. Extension.extension:moiety.extension:molecularFormula.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularFormula`
130. Extension.extension:moiety.extension:molecularFormula.value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formula
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
132. Extension.extension:moiety.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this moiety
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
134. Extension.extension:moiety.extension:amount[x].id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
136. Extension.extension:moiety.extension:amount[x].extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
138. Extension.extension:moiety.extension:amount[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amount[x]`
140. Extension.extension:moiety.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.moiety.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this moiety
Control	0..1
Type	Choice of: Quantity, string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
142. Extension.extension:moiety.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`moiety`
144. Extension.extension:moiety.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
146. Extension.extension:property
Slice Name	property
Definition	This cross-version extension represents SubstanceSpecification.property from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	General specifications for this substance, including how it is related to other substances
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
148. Extension.extension:property.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
150. Extension.extension:property.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
152. Extension.extension:property.extension:category
Slice Name	category
Definition	This cross-version extension represents SubstanceSpecification.property.category from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A category for this property, e.g. Physical, Chemical, Enzymatic
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
154. Extension.extension:property.extension:category.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
156. Extension.extension:property.extension:category.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
158. Extension.extension:property.extension:category.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`category`
160. Extension.extension:property.extension:category.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.category from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A category for this property, e.g. Physical, Chemical, Enzymatic
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
162. Extension.extension:property.extension:code
Slice Name	code
Definition	This cross-version extension represents SubstanceSpecification.property.code from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Property type e.g. viscosity, pH, isoelectric point
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
164. Extension.extension:property.extension:code.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
166. Extension.extension:property.extension:code.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
168. Extension.extension:property.extension:code.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`code`
170. Extension.extension:property.extension:code.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.code from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Property type e.g. viscosity, pH, isoelectric point
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
172. Extension.extension:property.extension:parameters
Slice Name	parameters
Definition	This cross-version extension represents SubstanceSpecification.property.parameters from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Parameters that were used in the measurement of a property (e.g. for viscosity: measured at 20C with a pH of 7.1)
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
174. Extension.extension:property.extension:parameters.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
176. Extension.extension:property.extension:parameters.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
178. Extension.extension:property.extension:parameters.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`parameters`
180. Extension.extension:property.extension:parameters.value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.parameters from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Parameters that were used in the measurement of a property (e.g. for viscosity: measured at 20C with a pH of 7.1)
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
182. Extension.extension:property.extension:definingSubstance[x]
Slice Name	definingSubstance[x]
Definition	This cross-version extension represents SubstanceSpecification.property.definingSubstance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A substance upon which a defining property depends (e.g. for solubility: in water, in alcohol)
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
184. Extension.extension:property.extension:definingSubstance[x].id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
186. Extension.extension:property.extension:definingSubstance[x].extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
188. Extension.extension:property.extension:definingSubstance[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`definingSubstance[x]`
190. Extension.extension:property.extension:definingSubstance[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.definingSubstance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A substance upon which a defining property depends (e.g. for solubility: in water, in alcohol)
Control	0..1
Type	Choice of: Reference, CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
192. Extension.extension:property.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.property.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this property
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
194. Extension.extension:property.extension:amount[x].id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
196. Extension.extension:property.extension:amount[x].extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
198. Extension.extension:property.extension:amount[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amount[x]`
200. Extension.extension:property.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.property.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Quantitative value for this property
Control	0..1
Type	Choice of: Quantity, string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
202. Extension.extension:property.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`property`
204. Extension.extension:property.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
206. Extension.extension:referenceInformation
Slice Name	referenceInformation
Definition	This cross-version extension represents SubstanceSpecification.referenceInformation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	General information detailing this substance
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
208. Extension.extension:referenceInformation.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
210. Extension.extension:referenceInformation.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
212. Extension.extension:referenceInformation.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`referenceInformation`
214. Extension.extension:referenceInformation.value[x]
Definition	This cross-version extension represents SubstanceSpecification.referenceInformation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	General information detailing this substance
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
216. Extension.extension:structure
Slice Name	structure
Definition	This cross-version extension represents SubstanceSpecification.structure from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Structural information
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
218. Extension.extension:structure.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
220. Extension.extension:structure.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
222. Extension.extension:structure.extension:stereochemistry
Slice Name	stereochemistry
Definition	This cross-version extension represents SubstanceSpecification.structure.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry type
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
224. Extension.extension:structure.extension:stereochemistry.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
226. Extension.extension:structure.extension:stereochemistry.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
228. Extension.extension:structure.extension:stereochemistry.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`stereochemistry`
230. Extension.extension:structure.extension:stereochemistry.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.stereochemistry from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Stereochemistry type
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
232. Extension.extension:structure.extension:opticalActivity
Slice Name	opticalActivity
Definition	This cross-version extension represents SubstanceSpecification.structure.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity type
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
234. Extension.extension:structure.extension:opticalActivity.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
236. Extension.extension:structure.extension:opticalActivity.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
238. Extension.extension:structure.extension:opticalActivity.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`opticalActivity`
240. Extension.extension:structure.extension:opticalActivity.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.opticalActivity from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Optical activity type
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
242. Extension.extension:structure.extension:molecularFormula
Slice Name	molecularFormula
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formula
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
244. Extension.extension:structure.extension:molecularFormula.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
246. Extension.extension:structure.extension:molecularFormula.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
248. Extension.extension:structure.extension:molecularFormula.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularFormula`
250. Extension.extension:structure.extension:molecularFormula.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormula from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular formula
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
252. Extension.extension:structure.extension:molecularFormulaByMoiety
Slice Name	molecularFormulaByMoiety
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormulaByMoiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Specified per moiety according to the Hill system, i.e. first C, then H, then alphabetical, each moiety separated by a dot
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
254. Extension.extension:structure.extension:molecularFormulaByMoiety.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
256. Extension.extension:structure.extension:molecularFormulaByMoiety.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
258. Extension.extension:structure.extension:molecularFormulaByMoiety.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularFormulaByMoiety`
260. Extension.extension:structure.extension:molecularFormulaByMoiety.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularFormulaByMoiety from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Specified per moiety according to the Hill system, i.e. first C, then H, then alphabetical, each moiety separated by a dot
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
262. Extension.extension:structure.extension:isotope
Slice Name	isotope
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Applicable for single substances that contain a radionuclide or a non-natural isotopic ratio
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
264. Extension.extension:structure.extension:isotope.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
266. Extension.extension:structure.extension:isotope.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
268. Extension.extension:structure.extension:isotope.extension:identifier
Slice Name	identifier
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance identifier for each non-natural or radioisotope
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
270. Extension.extension:structure.extension:isotope.extension:identifier.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
272. Extension.extension:structure.extension:isotope.extension:identifier.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
274. Extension.extension:structure.extension:isotope.extension:identifier.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`identifier`
276. Extension.extension:structure.extension:isotope.extension:identifier.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.identifier from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance identifier for each non-natural or radioisotope
Control	0..1
Type	Identifier
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
278. Extension.extension:structure.extension:isotope.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance name for each non-natural or radioisotope
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
280. Extension.extension:structure.extension:isotope.extension:name.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
282. Extension.extension:structure.extension:isotope.extension:name.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
284. Extension.extension:structure.extension:isotope.extension:name.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`name`
286. Extension.extension:structure.extension:isotope.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Substance name for each non-natural or radioisotope
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
288. Extension.extension:structure.extension:isotope.extension:substitution
Slice Name	substitution
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.substitution from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of isotopic substitution present in a single substance
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
290. Extension.extension:structure.extension:isotope.extension:substitution.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
292. Extension.extension:structure.extension:isotope.extension:substitution.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
294. Extension.extension:structure.extension:isotope.extension:substitution.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`substitution`
296. Extension.extension:structure.extension:isotope.extension:substitution.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.substitution from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of isotopic substitution present in a single substance
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
298. Extension.extension:structure.extension:isotope.extension:halfLife
Slice Name	halfLife
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.halfLife from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Half life - for a non-natural nuclide
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
300. Extension.extension:structure.extension:isotope.extension:halfLife.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
302. Extension.extension:structure.extension:isotope.extension:halfLife.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
304. Extension.extension:structure.extension:isotope.extension:halfLife.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`halfLife`
306. Extension.extension:structure.extension:isotope.extension:halfLife.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.halfLife from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Half life - for a non-natural nuclide
Control	0..1
Type	Quantity
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
308. Extension.extension:structure.extension:isotope.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
310. Extension.extension:structure.extension:isotope.extension:molecularWeight.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
312. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
314. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method
Slice Name	method
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.method from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The method by which the molecular weight was determined
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
316. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
318. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
320. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`method`
322. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:method.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.method from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The method by which the molecular weight was determined
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
324. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Type of molecular weight such as exact, average (also known as. number average), weight average
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
326. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
328. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
330. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
332. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Type of molecular weight such as exact, average (also known as. number average), weight average
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
334. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount
Slice Name	amount
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.amount from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
336. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
338. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
340. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amount`
342. Extension.extension:structure.extension:isotope.extension:molecularWeight.extension:amount.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.isotope.molecularWeight.amount from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Used to capture quantitative values for a variety of elements. If only limits are given, the arithmetic mean would be the average. If only a single definite value for a given element is given, it would be captured in this field
Control	0..1
Type	Quantity
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
344. Extension.extension:structure.extension:isotope.extension:molecularWeight.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularWeight`
346. Extension.extension:structure.extension:isotope.extension:molecularWeight.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
348. Extension.extension:structure.extension:isotope.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`isotope`
350. Extension.extension:structure.extension:isotope.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
352. Extension.extension:structure.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.structure.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
354. Extension.extension:structure.extension:molecularWeight.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
356. Extension.extension:structure.extension:molecularWeight.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
358. Extension.extension:structure.extension:molecularWeight.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.structure.molecularWeight from FHIR R4
Short	Data type name for SubstanceSpecification.structure.molecularWeight from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
360. Extension.extension:structure.extension:molecularWeight.extension:_datatype.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
362. Extension.extension:structure.extension:molecularWeight.extension:_datatype.extension
Definition	An Extension
Short	Extension
Control	0..0
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
364. Extension.extension:structure.extension:molecularWeight.extension:_datatype.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/StructureDefinition/_datatype`
366. Extension.extension:structure.extension:molecularWeight.extension:_datatype.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Comments	Must be: SubstanceSpecification.structure.isotope.molecularWeight
Control	1..1 This element is affected by the following invariants: ext-1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Fixed Value	`SubstanceSpecification.structure.isotope.molecularWeight`
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
368. Extension.extension:structure.extension:molecularWeight.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularWeight`
370. Extension.extension:structure.extension:molecularWeight.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
372. Extension.extension:structure.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.structure.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
374. Extension.extension:structure.extension:source.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
376. Extension.extension:structure.extension:source.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
378. Extension.extension:structure.extension:source.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`source`
380. Extension.extension:structure.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
382. Extension.extension:structure.extension:representation
Slice Name	representation
Definition	This cross-version extension represents SubstanceSpecification.structure.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Molecular structural representation
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
384. Extension.extension:structure.extension:representation.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
386. Extension.extension:structure.extension:representation.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
388. Extension.extension:structure.extension:representation.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of structure (e.g. Full, Partial, Representative)
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
390. Extension.extension:structure.extension:representation.extension:type.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
392. Extension.extension:structure.extension:representation.extension:type.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
394. Extension.extension:structure.extension:representation.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
396. Extension.extension:structure.extension:representation.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The type of structure (e.g. Full, Partial, Representative)
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
398. Extension.extension:structure.extension:representation.extension:representation
Slice Name	representation
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The structural representation as text string in a format e.g. InChI, SMILES, MOLFILE, CDX
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
400. Extension.extension:structure.extension:representation.extension:representation.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
402. Extension.extension:structure.extension:representation.extension:representation.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
404. Extension.extension:structure.extension:representation.extension:representation.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`representation`
406. Extension.extension:structure.extension:representation.extension:representation.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.representation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The structural representation as text string in a format e.g. InChI, SMILES, MOLFILE, CDX
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
408. Extension.extension:structure.extension:representation.extension:attachment
Slice Name	attachment
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.attachment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An attached file with the structural representation
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
410. Extension.extension:structure.extension:representation.extension:attachment.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
412. Extension.extension:structure.extension:representation.extension:attachment.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
414. Extension.extension:structure.extension:representation.extension:attachment.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`attachment`
416. Extension.extension:structure.extension:representation.extension:attachment.value[x]
Definition	This cross-version extension represents SubstanceSpecification.structure.representation.attachment from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An attached file with the structural representation
Control	0..1
Type	Attachment
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
418. Extension.extension:structure.extension:representation.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`representation`
420. Extension.extension:structure.extension:representation.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
422. Extension.extension:structure.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`structure`
424. Extension.extension:structure.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
426. Extension.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Names applicable to this substance
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
428. Extension.extension:name.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
430. Extension.extension:name.extension
Definition	An Extension
Short	Extension
Control	1..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
432. Extension.extension:name.extension:name
Slice Name	name
Definition	This cross-version extension represents SubstanceSpecification.name.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The actual name
Control	1..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
434. Extension.extension:name.extension:name.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
436. Extension.extension:name.extension:name.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
438. Extension.extension:name.extension:name.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`name`
440. Extension.extension:name.extension:name.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.name from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The actual name
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
442. Extension.extension:name.extension:type
Slice Name	type
Definition	This cross-version extension represents SubstanceSpecification.name.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Name type
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
444. Extension.extension:name.extension:type.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
446. Extension.extension:name.extension:type.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
448. Extension.extension:name.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
450. Extension.extension:name.extension:type.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.type from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Name type
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
452. Extension.extension:name.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.name.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the name
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
454. Extension.extension:name.extension:status.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
456. Extension.extension:name.extension:status.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
458. Extension.extension:name.extension:status.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`status`
460. Extension.extension:name.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the name
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
462. Extension.extension:name.extension:preferred
Slice Name	preferred
Definition	This cross-version extension represents SubstanceSpecification.name.preferred from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If this is the preferred name for this substance
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
464. Extension.extension:name.extension:preferred.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
466. Extension.extension:name.extension:preferred.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
468. Extension.extension:name.extension:preferred.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`preferred`
470. Extension.extension:name.extension:preferred.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.preferred from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	If this is the preferred name for this substance
Control	0..1
Type	boolean
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
472. Extension.extension:name.extension:language
Slice Name	language
Definition	This cross-version extension represents SubstanceSpecification.name.language from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Language of the name
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
474. Extension.extension:name.extension:language.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
476. Extension.extension:name.extension:language.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
478. Extension.extension:name.extension:language.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`language`
480. Extension.extension:name.extension:language.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.language from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Language of the name
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
482. Extension.extension:name.extension:domain
Slice Name	domain
Definition	This cross-version extension represents SubstanceSpecification.name.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The use context of this name for example if there is a different name a drug active ingredient as opposed to a food colour additive
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
484. Extension.extension:name.extension:domain.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
486. Extension.extension:name.extension:domain.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
488. Extension.extension:name.extension:domain.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`domain`
490. Extension.extension:name.extension:domain.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.domain from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The use context of this name for example if there is a different name a drug active ingredient as opposed to a food colour additive
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
492. Extension.extension:name.extension:jurisdiction
Slice Name	jurisdiction
Definition	This cross-version extension represents SubstanceSpecification.name.jurisdiction from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The jurisdiction where this name applies
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
494. Extension.extension:name.extension:jurisdiction.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
496. Extension.extension:name.extension:jurisdiction.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
498. Extension.extension:name.extension:jurisdiction.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`jurisdiction`
500. Extension.extension:name.extension:jurisdiction.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.jurisdiction from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The jurisdiction where this name applies
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
502. Extension.extension:name.extension:synonym
Slice Name	synonym
Definition	This cross-version extension represents SubstanceSpecification.name.synonym from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A synonym of this name
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
504. Extension.extension:name.extension:synonym.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
506. Extension.extension:name.extension:synonym.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
508. Extension.extension:name.extension:synonym.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.name.synonym from FHIR R4
Short	Data type name for SubstanceSpecification.name.synonym from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
510. Extension.extension:name.extension:synonym.extension:_datatype.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
512. Extension.extension:name.extension:synonym.extension:_datatype.extension
Definition	An Extension
Short	Extension
Control	0..0
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
514. Extension.extension:name.extension:synonym.extension:_datatype.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/StructureDefinition/_datatype`
516. Extension.extension:name.extension:synonym.extension:_datatype.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Comments	Must be: SubstanceSpecification.name
Control	1..1 This element is affected by the following invariants: ext-1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Fixed Value	`SubstanceSpecification.name`
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
518. Extension.extension:name.extension:synonym.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`synonym`
520. Extension.extension:name.extension:synonym.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
522. Extension.extension:name.extension:translation
Slice Name	translation
Definition	This cross-version extension represents SubstanceSpecification.name.translation from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A translation for this name
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
524. Extension.extension:name.extension:translation.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
526. Extension.extension:name.extension:translation.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
528. Extension.extension:name.extension:translation.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.name.translation from FHIR R4
Short	Data type name for SubstanceSpecification.name.translation from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
530. Extension.extension:name.extension:translation.extension:_datatype.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
532. Extension.extension:name.extension:translation.extension:_datatype.extension
Definition	An Extension
Short	Extension
Control	0..0
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
534. Extension.extension:name.extension:translation.extension:_datatype.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/StructureDefinition/_datatype`
536. Extension.extension:name.extension:translation.extension:_datatype.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Comments	Must be: SubstanceSpecification.name
Control	1..1 This element is affected by the following invariants: ext-1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Fixed Value	`SubstanceSpecification.name`
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
538. Extension.extension:name.extension:translation.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`translation`
540. Extension.extension:name.extension:translation.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
542. Extension.extension:name.extension:official
Slice Name	official
Definition	This cross-version extension represents SubstanceSpecification.name.official from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Details of the official nature of this name
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
544. Extension.extension:name.extension:official.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
546. Extension.extension:name.extension:official.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
548. Extension.extension:name.extension:official.extension:authority
Slice Name	authority
Definition	This cross-version extension represents SubstanceSpecification.name.official.authority from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Which authority uses this official name
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
550. Extension.extension:name.extension:official.extension:authority.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
552. Extension.extension:name.extension:official.extension:authority.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
554. Extension.extension:name.extension:official.extension:authority.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`authority`
556. Extension.extension:name.extension:official.extension:authority.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.authority from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Which authority uses this official name
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
558. Extension.extension:name.extension:official.extension:status
Slice Name	status
Definition	This cross-version extension represents SubstanceSpecification.name.official.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the official name
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
560. Extension.extension:name.extension:official.extension:status.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
562. Extension.extension:name.extension:official.extension:status.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
564. Extension.extension:name.extension:official.extension:status.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`status`
566. Extension.extension:name.extension:official.extension:status.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.status from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The status of the official name
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
568. Extension.extension:name.extension:official.extension:date
Slice Name	date
Definition	This cross-version extension represents SubstanceSpecification.name.official.date from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Date of official name change
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
570. Extension.extension:name.extension:official.extension:date.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
572. Extension.extension:name.extension:official.extension:date.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
574. Extension.extension:name.extension:official.extension:date.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`date`
576. Extension.extension:name.extension:official.extension:date.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.official.date from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Date of official name change
Control	0..1
Type	dateTime
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
578. Extension.extension:name.extension:official.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`official`
580. Extension.extension:name.extension:official.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
582. Extension.extension:name.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.name.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
584. Extension.extension:name.extension:source.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
586. Extension.extension:name.extension:source.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
588. Extension.extension:name.extension:source.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`source`
590. Extension.extension:name.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.name.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
592. Extension.extension:name.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`name`
594. Extension.extension:name.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
596. Extension.extension:molecularWeight
Slice Name	molecularWeight
Definition	This cross-version extension represents SubstanceSpecification.molecularWeight from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	The molecular weight or weight range (for proteins, polymers or nucleic acids)
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
598. Extension.extension:molecularWeight.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
600. Extension.extension:molecularWeight.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
602. Extension.extension:molecularWeight.extension:_datatype
Slice Name	_datatype
Definition	Data type name for SubstanceSpecification.molecularWeight from FHIR R4
Short	Data type name for SubstanceSpecification.molecularWeight from FHIR R4
Control	0..1
Type	Extension(Datatype) (Extension Type: string)
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
604. Extension.extension:molecularWeight.extension:_datatype.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
606. Extension.extension:molecularWeight.extension:_datatype.extension
Definition	An Extension
Short	Extension
Control	0..0
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
608. Extension.extension:molecularWeight.extension:_datatype.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/StructureDefinition/_datatype`
610. Extension.extension:molecularWeight.extension:_datatype.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Comments	Must be: SubstanceSpecification.structure.isotope.molecularWeight
Control	1..1 This element is affected by the following invariants: ext-1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Fixed Value	`SubstanceSpecification.structure.isotope.molecularWeight`
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
612. Extension.extension:molecularWeight.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`molecularWeight`
614. Extension.extension:molecularWeight.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
616. Extension.extension:relationship
Slice Name	relationship
Definition	This cross-version extension represents SubstanceSpecification.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A link between this substance and another, with details of the relationship
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
618. Extension.extension:relationship.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
620. Extension.extension:relationship.extension
Definition	An Extension
Short	Extension
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Closed, and can be differentiated using the following discriminators: value @ url
622. Extension.extension:relationship.extension:substance[x]
Slice Name	substance[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.substance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A pointer to another substance, as a resource or just a representational code
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
624. Extension.extension:relationship.extension:substance[x].id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
626. Extension.extension:relationship.extension:substance[x].extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
628. Extension.extension:relationship.extension:substance[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`substance[x]`
630. Extension.extension:relationship.extension:substance[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.substance[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A pointer to another substance, as a resource or just a representational code
Control	0..1
Type	Choice of: Reference, CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
632. Extension.extension:relationship.extension:relationship
Slice Name	relationship
Definition	This cross-version extension represents SubstanceSpecification.relationship.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example "salt to parent", "active moiety", "starting material"
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
634. Extension.extension:relationship.extension:relationship.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
636. Extension.extension:relationship.extension:relationship.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
638. Extension.extension:relationship.extension:relationship.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`relationship`
640. Extension.extension:relationship.extension:relationship.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.relationship from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example "salt to parent", "active moiety", "starting material"
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
642. Extension.extension:relationship.extension:isDefining
Slice Name	isDefining
Definition	This cross-version extension represents SubstanceSpecification.relationship.isDefining from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example where an enzyme strongly bonds with a particular substance, this is a defining relationship for that enzyme, out of several possible substance relationships
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
644. Extension.extension:relationship.extension:isDefining.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
646. Extension.extension:relationship.extension:isDefining.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
648. Extension.extension:relationship.extension:isDefining.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`isDefining`
650. Extension.extension:relationship.extension:isDefining.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.isDefining from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For example where an enzyme strongly bonds with a particular substance, this is a defining relationship for that enzyme, out of several possible substance relationships
Control	0..1
Type	boolean
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
652. Extension.extension:relationship.extension:amount[x]
Slice Name	amount[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A numeric factor for the relationship, for instance to express that the salt of a substance has some percentage of the active substance in relation to some other
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
654. Extension.extension:relationship.extension:amount[x].id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
656. Extension.extension:relationship.extension:amount[x].extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
658. Extension.extension:relationship.extension:amount[x].url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amount[x]`
660. Extension.extension:relationship.extension:amount[x].value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amount[x] from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	A numeric factor for the relationship, for instance to express that the salt of a substance has some percentage of the active substance in relation to some other
Control	0..1
Type	Choice of: Quantity, Range, Ratio, string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
662. Extension.extension:relationship.extension:amountRatioLowLimit
Slice Name	amountRatioLowLimit
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountRatioLowLimit from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For use when the numeric
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
664. Extension.extension:relationship.extension:amountRatioLowLimit.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
666. Extension.extension:relationship.extension:amountRatioLowLimit.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
668. Extension.extension:relationship.extension:amountRatioLowLimit.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amountRatioLowLimit`
670. Extension.extension:relationship.extension:amountRatioLowLimit.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountRatioLowLimit from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	For use when the numeric
Control	0..1
Type	Ratio
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
672. Extension.extension:relationship.extension:amountType
Slice Name	amountType
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountType from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An operator for the amount, for example "average", "approximately", "less than"
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
674. Extension.extension:relationship.extension:amountType.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
676. Extension.extension:relationship.extension:amountType.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
678. Extension.extension:relationship.extension:amountType.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`amountType`
680. Extension.extension:relationship.extension:amountType.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.amountType from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	An operator for the amount, for example "average", "approximately", "less than"
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
682. Extension.extension:relationship.extension:source
Slice Name	source
Definition	This cross-version extension represents SubstanceSpecification.relationship.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
684. Extension.extension:relationship.extension:source.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
686. Extension.extension:relationship.extension:source.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
688. Extension.extension:relationship.extension:source.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`source`
690. Extension.extension:relationship.extension:source.value[x]
Definition	This cross-version extension represents SubstanceSpecification.relationship.source from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Supporting literature
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
692. Extension.extension:relationship.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`relationship`
694. Extension.extension:relationship.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
696. Extension.extension:nucleicAcid
Slice Name	nucleicAcid
Definition	This cross-version extension represents SubstanceSpecification.nucleicAcid from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to nucleic acids
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
698. Extension.extension:nucleicAcid.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
700. Extension.extension:nucleicAcid.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
702. Extension.extension:nucleicAcid.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`nucleicAcid`
704. Extension.extension:nucleicAcid.value[x]
Definition	This cross-version extension represents SubstanceSpecification.nucleicAcid from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to nucleic acids
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
706. Extension.extension:polymer
Slice Name	polymer
Definition	This cross-version extension represents SubstanceSpecification.polymer from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to polymers
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
708. Extension.extension:polymer.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
710. Extension.extension:polymer.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
712. Extension.extension:polymer.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`polymer`
714. Extension.extension:polymer.value[x]
Definition	This cross-version extension represents SubstanceSpecification.polymer from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to polymers
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
716. Extension.extension:protein
Slice Name	protein
Definition	This cross-version extension represents SubstanceSpecification.protein from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to proteins
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
718. Extension.extension:protein.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
720. Extension.extension:protein.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
722. Extension.extension:protein.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`protein`
724. Extension.extension:protein.value[x]
Definition	This cross-version extension represents SubstanceSpecification.protein from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Data items specific to proteins
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
726. Extension.extension:sourceMaterial
Slice Name	sourceMaterial
Definition	This cross-version extension represents SubstanceSpecification.sourceMaterial from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Material or taxonomic/anatomical source for the substance
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
728. Extension.extension:sourceMaterial.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
730. Extension.extension:sourceMaterial.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
732. Extension.extension:sourceMaterial.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`sourceMaterial`
734. Extension.extension:sourceMaterial.value[x]
Definition	This cross-version extension represents SubstanceSpecification.sourceMaterial from http://hl7.org/fhir/StructureDefinition/SubstanceSpecification\|4.0.1 for use in FHIR R4B.
Short	Material or taxonomic/anatomical source for the substance
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
736. Extension.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstanceSpecification`
738. Extension.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)