Cross-version Extension for R4B.Substance.instance for use in FHIR R5 - Definitions - FHIR Cross-Version Extensions package for FHIR R5 from FHIR R4B v0.0.1-snapshot-2

FHIR Cross-Version Extensions package for FHIR R5 from FHIR R4B - Version 0.0.1-snapshot-2. See the Directory of published versions

Extension: Ext_R4B_Substance_instance - Detailed Descriptions

Page standards status: Informative

Maturity Level: 0

Definitions for the ext-R4B-Substance.instance 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	Substance may be used to describe a kind of substance, or a specific package/container of the substance: an instance.
Short	If this describes a specific package/container of the substance
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
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:identifier
Slice Name	identifier
Definition	Identifier associated with the package/container (usually a label affixed directly).
Short	Identifier of the package/container
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1
6. Extension.extension:identifier.url
Control	1..1
Fixed Value	`identifier`
8. Extension.extension:identifier.value[x]
Definition	Identifier associated with the package/container (usually a label affixed directly).
Short	Identifier of the package/container
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Type	Identifier
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
10. Extension.extension:expiry
Slice Name	expiry
Definition	When the substance is no longer valid to use. For some substances, a single arbitrary date is used for expiry.
Short	When no longer valid to use
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1
12. Extension.extension:expiry.url
Control	1..1
Fixed Value	`expiry`
14. Extension.extension:expiry.value[x]
Definition	When the substance is no longer valid to use. For some substances, a single arbitrary date is used for expiry.
Short	When no longer valid to use
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
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
16. Extension.extension:quantity
Slice Name	quantity
Definition	The amount of the substance.
Short	Amount of substance in the package
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1
18. Extension.extension:quantity.url
Control	1..1
Fixed Value	`quantity`
20. Extension.extension:quantity.value[x]
Definition	The amount of the substance.
Short	Amount of substance in the package
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Type	Quantity(SimpleQuantity)
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
22. Extension.url
Control	1..1
Fixed Value	`http://hl7.org/fhir/4.3/StructureDefinition/extension-Substance.instance`

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

0. Extension
Definition	Substance may be used to describe a kind of substance, or a specific package/container of the substance: an instance. Optional Extension Element - found in all resources.
Short	If this describes a specific package/container of the substanceOptional Extensions Element
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..*
Is Modifier	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())
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 managable, 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:identifier
Slice Name	identifier
Definition	Identifier associated with the package/container (usually a label affixed directly).
Short	Identifier of the package/containerAdditional content defined by implementations
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
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: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`
8. Extension.extension:identifier.value[x]
Definition	Identifier associated with the package/container (usually a label affixed directly). Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Identifier of the package/containerValue of extension
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1 This element is affected by the following invariants: ext-1
Type	Identifier, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, string, 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:expiry
Slice Name	expiry
Definition	When the substance is no longer valid to use. For some substances, a single arbitrary date is used for expiry.
Short	When no longer valid to useAdditional content defined by implementations
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
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:expiry.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	`expiry`
14. Extension.extension:expiry.value[x]
Definition	When the substance is no longer valid to use. For some substances, a single arbitrary date is used for expiry. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	When no longer valid to useValue of extension
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1 This element is affected by the following invariants: ext-1
Type	dateTime, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, code, string, 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()))
16. Extension.extension:quantity
Slice Name	quantity
Definition	The amount of the substance.
Short	Amount of substance in the packageAdditional content defined by implementations
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
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:quantity.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	`quantity`
20. Extension.extension:quantity.value[x]
Definition	The amount of the substance. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Amount of substance in the packageValue of extension
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1 This element is affected by the following invariants: ext-1
Type	Quantity(SimpleQuantity), date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, string, 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()))
22. 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/4.3/StructureDefinition/extension-Substance.instance`

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

0. Extension
Definition	Substance may be used to describe a kind of substance, or a specific package/container of the substance: an instance.
Short	If this describes a specific package/container of the substance
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..*
Is Modifier	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()`)
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 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
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:identifier
Slice Name	identifier
Definition	Identifier associated with the package/container (usually a label affixed directly).
Short	Identifier of the package/container
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
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: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 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
10. Extension.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 managable, 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: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`
14. Extension.extension:identifier.value[x]
Definition	Identifier associated with the package/container (usually a label affixed directly).
Short	Identifier of the package/container
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1 This element is affected by the following invariants: ext-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())`)
16. Extension.extension:expiry
Slice Name	expiry
Definition	When the substance is no longer valid to use. For some substances, a single arbitrary date is used for expiry.
Short	When no longer valid to use
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
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:expiry.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
20. Extension.extension:expiry.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 managable, 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:expiry.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	`expiry`
24. Extension.extension:expiry.value[x]
Definition	When the substance is no longer valid to use. For some substances, a single arbitrary date is used for expiry.
Short	When no longer valid to use
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1 This element is affected by the following invariants: ext-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())`)
26. Extension.extension:quantity
Slice Name	quantity
Definition	The amount of the substance.
Short	Amount of substance in the package
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
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:quantity.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
30. Extension.extension:quantity.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 managable, 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:quantity.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	`quantity`
34. Extension.extension:quantity.value[x]
Definition	The amount of the substance.
Short	Amount of substance in the package
Comments	`Substance.instance` maps to R5 `Substance.instance`. Has no type mapping Changed from an array to a single value (max cardinality from * to 1). So is mapped as SourceIsBroaderThanTarget.
Control	0..1 This element is affected by the following invariants: ext-1
Type	Quantity(SimpleQuantity)
[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.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/4.3/StructureDefinition/extension-Substance.instance`
38. 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 This element is affected by the following invariants: ext-1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, 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, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
[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())`)