StructureDefinition: elementdefinition-de

This page is part of the FHIR Specification (v3.2.0: R4 Ballot 1). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3 R2

StructureDefinition: elementdefinition-de

FHIR Infrastructure Work Group

Maturity Level: 1

Informative

Use Context: Any

The official URL for this profile is:

http://hl7.org/fhir/StructureDefinition/elementdefinition-de

Identifies how the ElementDefinition data type is used when it appears within a data element

This profile was published on Sat, Feb 28, 2015 00:00+1100 as a draft by Health Level Seven International (Orders and Observations).

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

Text Summary
Differential Table
Snapshot Table
XML Template
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All

This structure is derived from ElementDefinition.

Summary

Prohibited: 10 elements

Extensions

This structure refers to these extensions:

This structure is derived from ElementDefinition.

Name	Card.	Type	Description & Constraints
ElementDefinition	0..*
representation	0..0
slicing	0..0
short	0..0
contentReference	0..0
type	0..*	Element
profile	0..0
aggregation	0..0
defaultValue[x]	0..1	base64Binary, boolean, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference(), SampledData, Signature, Timing, Dosage, ContactDetail, Contributor, DataRequirement, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Meta
meaningWhenMissing	0..1	markdown
fixed[x]	0..0
pattern[x]	0..0
isModifier	0..0
isSummary	0..0
elementdefinition-question	0..*	string	Prompt for element phrased as question URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-question
elementdefinition-allowedUnits	0..1	CodeableConcept, Reference(ValueSet)	Units to use for measured value URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits Binding: UCUM Codes (required)
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints
ElementDefinition	I	0..*		Definition of an element in a resource or extension
id		0..1	string	xml:id (or equivalent in JSON)
elementdefinition-question		0..*	string	Extension URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-question
id		0..1	string	xml:id (or equivalent in JSON)
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/elementdefinition-question"
valueString		0..1	string	Value of extension
elementdefinition-allowedUnits		0..1	CodeableConcept, Reference(ValueSet)	Extension URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits Binding: UCUM Codes (required)
id		0..1	string	xml:id (or equivalent in JSON)
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits"
value[x]		1..1	CodeableConcept, Reference(ValueSet)	Value of extension Binding: UCUM Codes (required)
path	Î£	1..1	string	Path of the element in the hierarchy of elements
sliceName	Î£	0..1	string	Name for this particular element (in a set of slices)
label	Î£	0..1	string	Name for element to display with or prompt for element
code	Î£	0..*	Coding	Corresponding codes in terminologies Binding: LOINC Codes (example)
definition	Î£	0..1	markdown	Full formal definition as narrative text
comment	Î£	0..1	markdown	Comments about the use of this element
requirements	Î£	0..1	markdown	Why this resource has been created
alias	Î£	0..*	string	Other names
min	Î£I	0..1	unsignedInt	Minimum Cardinality
max	Î£I	0..1	string	Maximum Cardinality (a number or ) eld-3: Max SHALL be a number or ""
base	Î£I	0..1	Element	Base definition information for tools
id		0..1	string	xml:id (or equivalent in JSON)
path	Î£	1..1	string	Path that identifies the base element
min	Î£	1..1	unsignedInt	Min cardinality of the base element
max	Î£	1..1	string	Max cardinality of the base element
type	Î£I	0..*	Element	Data type and Profile for this element
id		0..1	string	xml:id (or equivalent in JSON)
code	Î£	1..1	uri	Data type or Resource (reference to definition) Binding: FHIRDefinedType (extensible)
targetProfile	Î£	0..1	uri	Profile (StructureDefinition or IG) that applies to the Reference target
versioning	Î£	0..1	code	either \| independent \| specific Binding: ReferenceVersionRules (required)
defaultValue[x]	Î£I	0..1	base64Binary, boolean, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference(), SampledData, Signature, Timing, Dosage, ContactDetail, Contributor, DataRequirement, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Meta	Specified value if missing from instance
meaningWhenMissing	Î£I	0..1	markdown	Implicit meaning when this element is missing
orderMeaning	Î£	0..1	string	What the order of the elements means
example	Î£I	0..*	Element	Example value (as defined for type)
id		0..1	string	xml:id (or equivalent in JSON)
label	Î£	1..1	string	Describes the purpose of this example
value[x]	Î£	1..1	base64Binary, boolean, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference(), SampledData, Signature, Timing, Dosage, ContactDetail, Contributor, DataRequirement, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Meta	Value of Example (one of allowed types)
minValue[x]	Î£	0..1	date, dateTime, instant, time, decimal, integer, positiveInt, unsignedInt, Quantity	Minimum Allowed Value (for some types)
maxValue[x]	Î£	0..1	date, dateTime, instant, time, decimal, integer, positiveInt, unsignedInt, Quantity	Maximum Allowed Value (for some types)
maxLength	Î£	0..1	integer	Max length for strings
condition	Î£	0..*	id	Reference to invariant about presence
constraint	Î£I	0..*	Element	Condition that must evaluate to true
id		0..1	string	xml:id (or equivalent in JSON)
key	Î£I	1..1	id	Target of 'condition' reference above
requirements	Î£	0..1	string	Why this constraint is necessary or appropriate
severity	Î£	1..1	code	error \| warning Binding: ConstraintSeverity (required)
human	Î£	1..1	string	Human description of constraint
expression	Î£	1..1	string	FHIRPath expression of constraint
xpath	Î£	0..1	string	XPath expression of constraint
source	Î£	0..1	uri	Reference to original source of constraint
mustSupport	Î£	0..1	boolean	If the element must supported
binding	Î£I	0..1	Element	ValueSet details if this is coded eld-12: ValueSet as a URI SHALL start with http:// or https:// or urn:
id		0..1	string	xml:id (or equivalent in JSON)
strength	Î£	1..1	code	required \| extensible \| preferred \| example Binding: BindingStrength (required)
description	Î£	0..1	string	Human explanation of the value set
valueSet[x]	Î£I	0..1	uri, Reference(ValueSet)	Source of value set
mapping	Î£I	0..*	Element	Map element to another set of definitions
id		0..1	string	xml:id (or equivalent in JSON)
identity	Î£	1..1	id	Reference to mapping declaration
language	Î£	0..1	code	Computable language of mapping Binding: IETF BCP-13 (required)
map	Î£	1..1	string	Details of the mapping
comment	Î£	0..1	string	Comments about the mapping or its use
Documentation for this format

<!-- DataElement constraint on ElementDefinition data type -->

<ElementDefinition xmlns="http://hl7.org/fhir"
>
  <!-- from Element: extension -->
 <path value="[string]"/><!-- 1..1 Path of the element in the hierarchy of elements -->
 <representation value="[code]"/><!-- 0..0 xmlAttr | xmlText | typeAttr | cdaText | xhtml -->
 <sliceName value="[string]"/><!-- 0..1 Name for this particular element (in a set of slices) -->
 <label value="[string]"/><!-- 0..1 Name for element to display with or prompt for element -->
 <code><!-- 0..* Coding Corresponding codes in terminologies --></code>
 <slicing>  0..0 Element  <!--  0..0 This element is sliced - slices follow -->
 </slicing>
 <short value="[string]"/><!-- 0..0 Concise definition for space-constrained presentation -->
 <definition value="[markdown]"/><!-- 0..1 Full formal definition as narrative text -->
 <comment value="[markdown]"/><!-- 0..1 Comments about the use of this element -->
 <requirements value="[markdown]"/><!-- 0..1 Why this resource has been created -->
 <alias value="[string]"/><!-- 0..* Other names -->
 <min value="[unsignedInt]"/><!-- 0..1 Minimum Cardinality -->
 <max value="[string]"/><!--  0..1 Maximum Cardinality (a number or *) -->
 <base>  0..1 Element  <!--  0..1 Base definition information for tools -->
  <path value="[string]"/><!-- 1..1 Path that identifies the base element -->
  <min value="[unsignedInt]"/><!-- 1..1 Min cardinality of the base element -->
  <max value="[string]"/><!-- 1..1 Max cardinality of the base element -->
 </base>
 <contentReference value="[uri]"/><!-- 0..0 Reference to definition of content for the element -->
 <type>  0..* Element  <!--  0..* Data type and Profile for this element -->
  <code value="[uri]"/><!-- 1..1 Data type or Resource (reference to definition) -->
  <profile value="[uri]"/><!-- 0..0 Profile (StructureDefinition or IG) that applies -->
  <targetProfile value="[uri]"/><!-- 0..1 
      Profile (StructureDefinition or IG) that applies to the Reference target -->
  <aggregation value="[code]"/><!-- 0..0 contained | referenced | bundled - how aggregated -->
  <versioning value="[code]"/><!-- 0..1 either | independent | specific -->
 </type>
 <defaultValue[x]><!-- 0..1 base64Binary|boolean|code|date|
   dateTime|decimal|id|instant|integer|markdown|oid|positiveInt|string|time|
   unsignedInt|uri|Address|Age|Annotation|Attachment|CodeableConcept|Coding|
   ContactPoint|Count|Distance|Duration|HumanName|Identifier|Money|Period|
   Quantity|Range|Ratio|Reference|SampledData|Signature|Timing|Dosage|
   ContactDetail|Contributor|DataRequirement|ParameterDefinition|RelatedArtifact|
   TriggerDefinition|UsageContext|Meta 
     Specified value if missing from instance --></defaultValue[x]>
 <meaningWhenMissing value="[markdown]"/><!-- 0..1 Implicit meaning when this element is missing -->
 <orderMeaning value="[string]"/><!-- 0..1 What the order of the elements means -->
 <fixed[x]><!-- 0..0 base64Binary|boolean|code|date|dateTime|
   decimal|id|instant|integer|markdown|oid|positiveInt|string|time|unsignedInt|
   uri|Address|Age|Annotation|Attachment|CodeableConcept|Coding|ContactPoint|
   Count|Distance|Duration|HumanName|Identifier|Money|Period|Quantity|Range|
   Ratio|Reference|SampledData|Signature|Timing|Dosage|ContactDetail|Contributor|
   DataRequirement|ParameterDefinition|RelatedArtifact|TriggerDefinition|
   UsageContext|Meta Value must be exactly this --></fixed[x]>
 <pattern[x]><!-- 0..0 base64Binary|boolean|code|date|dateTime|
   decimal|id|instant|integer|markdown|oid|positiveInt|string|time|unsignedInt|
   uri|Address|Age|Annotation|Attachment|CodeableConcept|Coding|ContactPoint|
   Count|Distance|Duration|HumanName|Identifier|Money|Period|Quantity|Range|
   Ratio|Reference|SampledData|Signature|Timing|Dosage|ContactDetail|Contributor|
   DataRequirement|ParameterDefinition|RelatedArtifact|TriggerDefinition|
   UsageContext|Meta Value must have at least these property values --></pattern[x]>
 <example>  0..* Element  <!--  0..* Example value (as defined for type) -->
  <label value="[string]"/><!-- 1..1 Describes the purpose of this example -->
  <value[x]><!-- 1..1 base64Binary|boolean|code|date|
    dateTime|decimal|id|instant|integer|markdown|oid|positiveInt|string|time|
    unsignedInt|uri|Address|Age|Annotation|Attachment|CodeableConcept|Coding|
    ContactPoint|Count|Distance|Duration|HumanName|Identifier|Money|Period|
    Quantity|Range|Ratio|Reference|SampledData|Signature|Timing|Dosage|
    ContactDetail|Contributor|DataRequirement|ParameterDefinition|
    RelatedArtifact|TriggerDefinition|UsageContext|Meta 
      Value of Example (one of allowed types) --></value[x]>
 </example>
 <minValue[x]><!-- 0..1 date|dateTime|instant|time|decimal|
   integer|positiveInt|unsignedInt|Quantity 
     Minimum Allowed Value (for some types) --></minValue[x]>
 <maxValue[x]><!-- 0..1 date|dateTime|instant|time|decimal|
   integer|positiveInt|unsignedInt|Quantity 
     Maximum Allowed Value (for some types) --></maxValue[x]>
 <maxLength value="[integer]"/><!-- 0..1 Max length for strings -->
 <condition value="[id]"/><!-- 0..* Reference to invariant about presence -->
 <constraint>  0..* Element  <!--  0..* Condition that must evaluate to true -->
  <key value="[id]"/><!-- 1..1 Target of 'condition' reference above -->
  <requirements value="[string]"/><!-- 0..1 Why this constraint is necessary or appropriate -->
  <severity value="[code]"/><!-- 1..1 error | warning -->
  <human value="[string]"/><!-- 1..1 Human description of constraint -->
  <expression value="[string]"/><!-- 1..1 FHIRPath expression of constraint -->
  <xpath value="[string]"/><!-- 0..1 XPath expression of constraint -->
  <source value="[uri]"/><!-- 0..1 Reference to original source of constraint -->
 </constraint>
 <mustSupport value="[boolean]"/><!-- 0..1 If the element must supported -->
 <isModifier value="[boolean]"/><!-- 0..0 If this modifies the meaning of other elements -->
 <isSummary value="[boolean]"/><!-- 0..0 Include when _summary = true? -->
 <binding>  0..1 Element  <!--  0..1 ValueSet details if this is coded -->
  <strength value="[code]"/><!-- 1..1 required | extensible | preferred | example -->
  <description value="[string]"/><!-- 0..1 Human explanation of the value set -->
  <valueSet[x]><!-- 0..1 uri|Reference(ValueSet) 
      Source of value set --></valueSet[x]>
 </binding>
 <mapping>  0..* Element  <!--  0..* Map element to another set of definitions -->
  <identity value="[id]"/><!-- 1..1 Reference to mapping declaration -->
  <language value="[code]"/><!-- 0..1 Computable language of mapping -->
  <map value="[string]"/><!-- 1..1 Details of the mapping -->
  <comment value="[string]"/><!-- 0..1 Comments about the mapping or its use -->
 </mapping>
</ElementDefinition>

{ // DataElement constraint on ElementDefinition data type
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open 
      { // Extension //
        // from Element: extension
        "extension" : [ //  sliced by value:url  in the specified order, Open ]
        "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-question", // R! 
        "valueString" : "<string>" //Value of extension
      },
      { // Extension //
        // from Element: extension
        "extension" : [ //  sliced by value:url  in the specified order, Open ]
        "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits", // R! 
// value[x]: Value of extension. One of these 2:
        "valueCodeableConcept" : { CodeableConcept } // R! Value of extension
        "valueReference" : { Reference(ValueSet) }, // R! Value of extension
      }
    ],
    "path" : "<string>", // R! Path of the element in the hierarchy of elements
    "sliceName" : "<string>", //Name for this particular element (in a set of slices)
    "label" : "<string>", //Name for element to display with or prompt for element
    "code" : [{ Coding }], //Corresponding codes in terminologies
    "definition" : "<markdown>", //Full formal definition as narrative text
    "comment" : "<markdown>", //Comments about the use of this element
    "requirements" : "<markdown>", //Why this resource has been created
    "alias" : ["<string>"], //Other names
    "min" : "<unsignedInt>", //Minimum Cardinality
    "max" : "<string>", // C?Maximum Cardinality (a number or *)
    "base" : { Element }, // C?Base definition information for tools
    "type" : [{ Element }], // C?Data type and Profile for this element
// value[x]: Specified value if missing from instance. One of these 46:
    "defaultValueBase64Binary" : "<base64Binary>", //Specified value if missing from instance
    "defaultValueBoolean" : <boolean>, //Specified value if missing from instance
    "defaultValueCode" : "<code>", //Specified value if missing from instance
    "defaultValueDate" : "<date>", //Specified value if missing from instance
    "defaultValueDateTime" : "<dateTime>", //Specified value if missing from instance
    "defaultValueDecimal" : <decimal>, //Specified value if missing from instance
    "defaultValueId" : "<id>", //Specified value if missing from instance
    "defaultValueInstant" : "<instant>", //Specified value if missing from instance
    "defaultValueInteger" : <integer>, //Specified value if missing from instance
    "defaultValueMarkdown" : "<markdown>", //Specified value if missing from instance
    "defaultValueOid" : "<oid>", //Specified value if missing from instance
    "defaultValuePositiveInt" : "<positiveInt>", //Specified value if missing from instance
    "defaultValueString" : "<string>", //Specified value if missing from instance
    "defaultValueTime" : "<time>", //Specified value if missing from instance
    "defaultValueUnsignedInt" : "<unsignedInt>", //Specified value if missing from instance
    "defaultValueUri" : "<uri>", //Specified value if missing from instance
    "defaultValueAddress" : { Address }, //Specified value if missing from instance
    "defaultValueAge" : { Age } //Specified value if missing from instance
    "defaultValueAnnotation" : { Annotation }, //Specified value if missing from instance
    "defaultValueAttachment" : { Attachment }, //Specified value if missing from instance
    "defaultValueCodeableConcept" : { CodeableConcept }, //Specified value if missing from instance
    "defaultValueCoding" : { Coding }, //Specified value if missing from instance
    "defaultValueContactPoint" : { ContactPoint }, //Specified value if missing from instance
    "defaultValueCount" : { Count }, //Specified value if missing from instance
    "defaultValueDistance" : { Distance }, //Specified value if missing from instance
    "defaultValueDuration" : { Duration }, //Specified value if missing from instance
    "defaultValueHumanName" : { HumanName }, //Specified value if missing from instance
    "defaultValueIdentifier" : { Identifier }, //Specified value if missing from instance
    "defaultValueMoney" : { Money }, //Specified value if missing from instance
    "defaultValuePeriod" : { Period }, //Specified value if missing from instance
    "defaultValueQuantity" : { Quantity }, //Specified value if missing from instance
    "defaultValueRange" : { Range }, //Specified value if missing from instance
    "defaultValueRatio" : { Ratio }, //Specified value if missing from instance
    "defaultValueReference" : { Reference }, //Specified value if missing from instance
    "defaultValueSampledData" : { SampledData }, //Specified value if missing from instance
    "defaultValueSignature" : { Signature }, //Specified value if missing from instance
    "defaultValueTiming" : { Timing }, //Specified value if missing from instance
    "defaultValueDosage" : { Dosage }, //Specified value if missing from instance
    "defaultValueContactDetail" : { ContactDetail }, //Specified value if missing from instance
    "defaultValueContributor" : { Contributor }, //Specified value if missing from instance
    "defaultValueDataRequirement" : { DataRequirement }, //Specified value if missing from instance
    "defaultValueParameterDefinition" : { ParameterDefinition }, //Specified value if missing from instance
    "defaultValueRelatedArtifact" : { RelatedArtifact }, //Specified value if missing from instance
    "defaultValueTriggerDefinition" : { TriggerDefinition }, //Specified value if missing from instance
    "defaultValueUsageContext" : { UsageContext }, //Specified value if missing from instance
    "defaultValueMeta" : { Meta }, //Specified value if missing from instance
    "meaningWhenMissing" : "<markdown>", //Implicit meaning when this element is missing
    "orderMeaning" : "<string>", //What the order of the elements means
// value[x]: Value must be exactly this. One of these 46:
// value[x]: Value must have at least these property values. One of these 46:
    "example" : [{ Element }], // C?Example value (as defined for type)
// value[x]: Minimum Allowed Value (for some types). One of these 9:
    "minValueDate" : "<date>", //Minimum Allowed Value (for some types)
    "minValueDateTime" : "<dateTime>", //Minimum Allowed Value (for some types)
    "minValueInstant" : "<instant>", //Minimum Allowed Value (for some types)
    "minValueTime" : "<time>", //Minimum Allowed Value (for some types)
    "minValueDecimal" : <decimal>, //Minimum Allowed Value (for some types)
    "minValueInteger" : <integer>, //Minimum Allowed Value (for some types)
    "minValuePositiveInt" : "<positiveInt>", //Minimum Allowed Value (for some types)
    "minValueUnsignedInt" : "<unsignedInt>", //Minimum Allowed Value (for some types)
    "minValueQuantity" : { Quantity }, //Minimum Allowed Value (for some types)
// value[x]: Maximum Allowed Value (for some types). One of these 9:
    "maxValueDate" : "<date>", //Maximum Allowed Value (for some types)
    "maxValueDateTime" : "<dateTime>", //Maximum Allowed Value (for some types)
    "maxValueInstant" : "<instant>", //Maximum Allowed Value (for some types)
    "maxValueTime" : "<time>", //Maximum Allowed Value (for some types)
    "maxValueDecimal" : <decimal>, //Maximum Allowed Value (for some types)
    "maxValueInteger" : <integer>, //Maximum Allowed Value (for some types)
    "maxValuePositiveInt" : "<positiveInt>", //Maximum Allowed Value (for some types)
    "maxValueUnsignedInt" : "<unsignedInt>", //Maximum Allowed Value (for some types)
    "maxValueQuantity" : { Quantity }, //Maximum Allowed Value (for some types)
    "maxLength" : <integer>, //Max length for strings
    "condition" : ["<id>"], //Reference to invariant about presence
    "constraint" : [{ Element }], // C?Condition that must evaluate to true
    "mustSupport" : <boolean>, //If the element must supported
    "binding" : { Element }, // C?ValueSet details if this is coded
    "mapping" : [{ Element }], // C?Map element to another set of definitions
  }

This structure is derived from ElementDefinition.

Summary

Prohibited: 10 elements

Extensions

This structure refers to these extensions:

Differential View

This structure is derived from ElementDefinition.

Name	Card.	Type	Description & Constraints
ElementDefinition	0..*
representation	0..0
slicing	0..0
short	0..0
contentReference	0..0
type	0..*	Element
profile	0..0
aggregation	0..0
defaultValue[x]	0..1	base64Binary, boolean, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference(), SampledData, Signature, Timing, Dosage, ContactDetail, Contributor, DataRequirement, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Meta
meaningWhenMissing	0..1	markdown
fixed[x]	0..0
pattern[x]	0..0
isModifier	0..0
isSummary	0..0
elementdefinition-question	0..*	string	Prompt for element phrased as question URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-question
elementdefinition-allowedUnits	0..1	CodeableConcept, Reference(ValueSet)	Units to use for measured value URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits Binding: UCUM Codes (required)
Documentation for this format

Snapshot View

Name	Flags	Card.	Type	Description & Constraints
ElementDefinition	I	0..*		Definition of an element in a resource or extension
id		0..1	string	xml:id (or equivalent in JSON)
elementdefinition-question		0..*	string	Extension URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-question
id		0..1	string	xml:id (or equivalent in JSON)
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/elementdefinition-question"
valueString		0..1	string	Value of extension
elementdefinition-allowedUnits		0..1	CodeableConcept, Reference(ValueSet)	Extension URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits Binding: UCUM Codes (required)
id		0..1	string	xml:id (or equivalent in JSON)
url		1..1	uri	"http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits"
value[x]		1..1	CodeableConcept, Reference(ValueSet)	Value of extension Binding: UCUM Codes (required)
path	Î£	1..1	string	Path of the element in the hierarchy of elements
sliceName	Î£	0..1	string	Name for this particular element (in a set of slices)
label	Î£	0..1	string	Name for element to display with or prompt for element
code	Î£	0..*	Coding	Corresponding codes in terminologies Binding: LOINC Codes (example)
definition	Î£	0..1	markdown	Full formal definition as narrative text
comment	Î£	0..1	markdown	Comments about the use of this element
requirements	Î£	0..1	markdown	Why this resource has been created
alias	Î£	0..*	string	Other names
min	Î£I	0..1	unsignedInt	Minimum Cardinality
max	Î£I	0..1	string	Maximum Cardinality (a number or ) eld-3: Max SHALL be a number or ""
base	Î£I	0..1	Element	Base definition information for tools
id		0..1	string	xml:id (or equivalent in JSON)
path	Î£	1..1	string	Path that identifies the base element
min	Î£	1..1	unsignedInt	Min cardinality of the base element
max	Î£	1..1	string	Max cardinality of the base element
type	Î£I	0..*	Element	Data type and Profile for this element
id		0..1	string	xml:id (or equivalent in JSON)
code	Î£	1..1	uri	Data type or Resource (reference to definition) Binding: FHIRDefinedType (extensible)
targetProfile	Î£	0..1	uri	Profile (StructureDefinition or IG) that applies to the Reference target
versioning	Î£	0..1	code	either \| independent \| specific Binding: ReferenceVersionRules (required)
defaultValue[x]	Î£I	0..1	base64Binary, boolean, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference(), SampledData, Signature, Timing, Dosage, ContactDetail, Contributor, DataRequirement, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Meta	Specified value if missing from instance
meaningWhenMissing	Î£I	0..1	markdown	Implicit meaning when this element is missing
orderMeaning	Î£	0..1	string	What the order of the elements means
example	Î£I	0..*	Element	Example value (as defined for type)
id		0..1	string	xml:id (or equivalent in JSON)
label	Î£	1..1	string	Describes the purpose of this example
value[x]	Î£	1..1	base64Binary, boolean, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference(), SampledData, Signature, Timing, Dosage, ContactDetail, Contributor, DataRequirement, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Meta	Value of Example (one of allowed types)
minValue[x]	Î£	0..1	date, dateTime, instant, time, decimal, integer, positiveInt, unsignedInt, Quantity	Minimum Allowed Value (for some types)
maxValue[x]	Î£	0..1	date, dateTime, instant, time, decimal, integer, positiveInt, unsignedInt, Quantity	Maximum Allowed Value (for some types)
maxLength	Î£	0..1	integer	Max length for strings
condition	Î£	0..*	id	Reference to invariant about presence
constraint	Î£I	0..*	Element	Condition that must evaluate to true
id		0..1	string	xml:id (or equivalent in JSON)
key	Î£I	1..1	id	Target of 'condition' reference above
requirements	Î£	0..1	string	Why this constraint is necessary or appropriate
severity	Î£	1..1	code	error \| warning Binding: ConstraintSeverity (required)
human	Î£	1..1	string	Human description of constraint
expression	Î£	1..1	string	FHIRPath expression of constraint
xpath	Î£	0..1	string	XPath expression of constraint
source	Î£	0..1	uri	Reference to original source of constraint
mustSupport	Î£	0..1	boolean	If the element must supported
binding	Î£I	0..1	Element	ValueSet details if this is coded eld-12: ValueSet as a URI SHALL start with http:// or https:// or urn:
id		0..1	string	xml:id (or equivalent in JSON)
strength	Î£	1..1	code	required \| extensible \| preferred \| example Binding: BindingStrength (required)
description	Î£	0..1	string	Human explanation of the value set
valueSet[x]	Î£I	0..1	uri, Reference(ValueSet)	Source of value set
mapping	Î£I	0..*	Element	Map element to another set of definitions
id		0..1	string	xml:id (or equivalent in JSON)
identity	Î£	1..1	id	Reference to mapping declaration
language	Î£	0..1	code	Computable language of mapping Binding: IETF BCP-13 (required)
map	Î£	1..1	string	Details of the mapping
comment	Î£	0..1	string	Comments about the mapping or its use
Documentation for this format

XML Template

<!-- DataElement constraint on ElementDefinition data type -->

<ElementDefinition xmlns="http://hl7.org/fhir"
>
  <!-- from Element: extension -->
 <path value="[string]"/><!-- 1..1 Path of the element in the hierarchy of elements -->
 <representation value="[code]"/><!-- 0..0 xmlAttr | xmlText | typeAttr | cdaText | xhtml -->
 <sliceName value="[string]"/><!-- 0..1 Name for this particular element (in a set of slices) -->
 <label value="[string]"/><!-- 0..1 Name for element to display with or prompt for element -->
 <code><!-- 0..* Coding Corresponding codes in terminologies --></code>
 <slicing>  0..0 Element  <!--  0..0 This element is sliced - slices follow -->
 </slicing>
 <short value="[string]"/><!-- 0..0 Concise definition for space-constrained presentation -->
 <definition value="[markdown]"/><!-- 0..1 Full formal definition as narrative text -->
 <comment value="[markdown]"/><!-- 0..1 Comments about the use of this element -->
 <requirements value="[markdown]"/><!-- 0..1 Why this resource has been created -->
 <alias value="[string]"/><!-- 0..* Other names -->
 <min value="[unsignedInt]"/><!-- 0..1 Minimum Cardinality -->
 <max value="[string]"/><!--  0..1 Maximum Cardinality (a number or *) -->
 <base>  0..1 Element  <!--  0..1 Base definition information for tools -->
  <path value="[string]"/><!-- 1..1 Path that identifies the base element -->
  <min value="[unsignedInt]"/><!-- 1..1 Min cardinality of the base element -->
  <max value="[string]"/><!-- 1..1 Max cardinality of the base element -->
 </base>
 <contentReference value="[uri]"/><!-- 0..0 Reference to definition of content for the element -->
 <type>  0..* Element  <!--  0..* Data type and Profile for this element -->
  <code value="[uri]"/><!-- 1..1 Data type or Resource (reference to definition) -->
  <profile value="[uri]"/><!-- 0..0 Profile (StructureDefinition or IG) that applies -->
  <targetProfile value="[uri]"/><!-- 0..1 
      Profile (StructureDefinition or IG) that applies to the Reference target -->
  <aggregation value="[code]"/><!-- 0..0 contained | referenced | bundled - how aggregated -->
  <versioning value="[code]"/><!-- 0..1 either | independent | specific -->
 </type>
 <defaultValue[x]><!-- 0..1 base64Binary|boolean|code|date|
   dateTime|decimal|id|instant|integer|markdown|oid|positiveInt|string|time|
   unsignedInt|uri|Address|Age|Annotation|Attachment|CodeableConcept|Coding|
   ContactPoint|Count|Distance|Duration|HumanName|Identifier|Money|Period|
   Quantity|Range|Ratio|Reference|SampledData|Signature|Timing|Dosage|
   ContactDetail|Contributor|DataRequirement|ParameterDefinition|RelatedArtifact|
   TriggerDefinition|UsageContext|Meta 
     Specified value if missing from instance --></defaultValue[x]>
 <meaningWhenMissing value="[markdown]"/><!-- 0..1 Implicit meaning when this element is missing -->
 <orderMeaning value="[string]"/><!-- 0..1 What the order of the elements means -->
 <fixed[x]><!-- 0..0 base64Binary|boolean|code|date|dateTime|
   decimal|id|instant|integer|markdown|oid|positiveInt|string|time|unsignedInt|
   uri|Address|Age|Annotation|Attachment|CodeableConcept|Coding|ContactPoint|
   Count|Distance|Duration|HumanName|Identifier|Money|Period|Quantity|Range|
   Ratio|Reference|SampledData|Signature|Timing|Dosage|ContactDetail|Contributor|
   DataRequirement|ParameterDefinition|RelatedArtifact|TriggerDefinition|
   UsageContext|Meta Value must be exactly this --></fixed[x]>
 <pattern[x]><!-- 0..0 base64Binary|boolean|code|date|dateTime|
   decimal|id|instant|integer|markdown|oid|positiveInt|string|time|unsignedInt|
   uri|Address|Age|Annotation|Attachment|CodeableConcept|Coding|ContactPoint|
   Count|Distance|Duration|HumanName|Identifier|Money|Period|Quantity|Range|
   Ratio|Reference|SampledData|Signature|Timing|Dosage|ContactDetail|Contributor|
   DataRequirement|ParameterDefinition|RelatedArtifact|TriggerDefinition|
   UsageContext|Meta Value must have at least these property values --></pattern[x]>
 <example>  0..* Element  <!--  0..* Example value (as defined for type) -->
  <label value="[string]"/><!-- 1..1 Describes the purpose of this example -->
  <value[x]><!-- 1..1 base64Binary|boolean|code|date|
    dateTime|decimal|id|instant|integer|markdown|oid|positiveInt|string|time|
    unsignedInt|uri|Address|Age|Annotation|Attachment|CodeableConcept|Coding|
    ContactPoint|Count|Distance|Duration|HumanName|Identifier|Money|Period|
    Quantity|Range|Ratio|Reference|SampledData|Signature|Timing|Dosage|
    ContactDetail|Contributor|DataRequirement|ParameterDefinition|
    RelatedArtifact|TriggerDefinition|UsageContext|Meta 
      Value of Example (one of allowed types) --></value[x]>
 </example>
 <minValue[x]><!-- 0..1 date|dateTime|instant|time|decimal|
   integer|positiveInt|unsignedInt|Quantity 
     Minimum Allowed Value (for some types) --></minValue[x]>
 <maxValue[x]><!-- 0..1 date|dateTime|instant|time|decimal|
   integer|positiveInt|unsignedInt|Quantity 
     Maximum Allowed Value (for some types) --></maxValue[x]>
 <maxLength value="[integer]"/><!-- 0..1 Max length for strings -->
 <condition value="[id]"/><!-- 0..* Reference to invariant about presence -->
 <constraint>  0..* Element  <!--  0..* Condition that must evaluate to true -->
  <key value="[id]"/><!-- 1..1 Target of 'condition' reference above -->
  <requirements value="[string]"/><!-- 0..1 Why this constraint is necessary or appropriate -->
  <severity value="[code]"/><!-- 1..1 error | warning -->
  <human value="[string]"/><!-- 1..1 Human description of constraint -->
  <expression value="[string]"/><!-- 1..1 FHIRPath expression of constraint -->
  <xpath value="[string]"/><!-- 0..1 XPath expression of constraint -->
  <source value="[uri]"/><!-- 0..1 Reference to original source of constraint -->
 </constraint>
 <mustSupport value="[boolean]"/><!-- 0..1 If the element must supported -->
 <isModifier value="[boolean]"/><!-- 0..0 If this modifies the meaning of other elements -->
 <isSummary value="[boolean]"/><!-- 0..0 Include when _summary = true? -->
 <binding>  0..1 Element  <!--  0..1 ValueSet details if this is coded -->
  <strength value="[code]"/><!-- 1..1 required | extensible | preferred | example -->
  <description value="[string]"/><!-- 0..1 Human explanation of the value set -->
  <valueSet[x]><!-- 0..1 uri|Reference(ValueSet) 
      Source of value set --></valueSet[x]>
 </binding>
 <mapping>  0..* Element  <!--  0..* Map element to another set of definitions -->
  <identity value="[id]"/><!-- 1..1 Reference to mapping declaration -->
  <language value="[code]"/><!-- 0..1 Computable language of mapping -->
  <map value="[string]"/><!-- 1..1 Details of the mapping -->
  <comment value="[string]"/><!-- 0..1 Comments about the mapping or its use -->
 </mapping>
</ElementDefinition>

JSON Template

{ // DataElement constraint on ElementDefinition data type
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open 
      { // Extension //
        // from Element: extension
        "extension" : [ //  sliced by value:url  in the specified order, Open ]
        "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-question", // R! 
        "valueString" : "<string>" //Value of extension
      },
      { // Extension //
        // from Element: extension
        "extension" : [ //  sliced by value:url  in the specified order, Open ]
        "url" : "http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits", // R! 
// value[x]: Value of extension. One of these 2:
        "valueCodeableConcept" : { CodeableConcept } // R! Value of extension
        "valueReference" : { Reference(ValueSet) }, // R! Value of extension
      }
    ],
    "path" : "<string>", // R! Path of the element in the hierarchy of elements
    "sliceName" : "<string>", //Name for this particular element (in a set of slices)
    "label" : "<string>", //Name for element to display with or prompt for element
    "code" : [{ Coding }], //Corresponding codes in terminologies
    "definition" : "<markdown>", //Full formal definition as narrative text
    "comment" : "<markdown>", //Comments about the use of this element
    "requirements" : "<markdown>", //Why this resource has been created
    "alias" : ["<string>"], //Other names
    "min" : "<unsignedInt>", //Minimum Cardinality
    "max" : "<string>", // C?Maximum Cardinality (a number or *)
    "base" : { Element }, // C?Base definition information for tools
    "type" : [{ Element }], // C?Data type and Profile for this element
// value[x]: Specified value if missing from instance. One of these 46:
    "defaultValueBase64Binary" : "<base64Binary>", //Specified value if missing from instance
    "defaultValueBoolean" : <boolean>, //Specified value if missing from instance
    "defaultValueCode" : "<code>", //Specified value if missing from instance
    "defaultValueDate" : "<date>", //Specified value if missing from instance
    "defaultValueDateTime" : "<dateTime>", //Specified value if missing from instance
    "defaultValueDecimal" : <decimal>, //Specified value if missing from instance
    "defaultValueId" : "<id>", //Specified value if missing from instance
    "defaultValueInstant" : "<instant>", //Specified value if missing from instance
    "defaultValueInteger" : <integer>, //Specified value if missing from instance
    "defaultValueMarkdown" : "<markdown>", //Specified value if missing from instance
    "defaultValueOid" : "<oid>", //Specified value if missing from instance
    "defaultValuePositiveInt" : "<positiveInt>", //Specified value if missing from instance
    "defaultValueString" : "<string>", //Specified value if missing from instance
    "defaultValueTime" : "<time>", //Specified value if missing from instance
    "defaultValueUnsignedInt" : "<unsignedInt>", //Specified value if missing from instance
    "defaultValueUri" : "<uri>", //Specified value if missing from instance
    "defaultValueAddress" : { Address }, //Specified value if missing from instance
    "defaultValueAge" : { Age } //Specified value if missing from instance
    "defaultValueAnnotation" : { Annotation }, //Specified value if missing from instance
    "defaultValueAttachment" : { Attachment }, //Specified value if missing from instance
    "defaultValueCodeableConcept" : { CodeableConcept }, //Specified value if missing from instance
    "defaultValueCoding" : { Coding }, //Specified value if missing from instance
    "defaultValueContactPoint" : { ContactPoint }, //Specified value if missing from instance
    "defaultValueCount" : { Count }, //Specified value if missing from instance
    "defaultValueDistance" : { Distance }, //Specified value if missing from instance
    "defaultValueDuration" : { Duration }, //Specified value if missing from instance
    "defaultValueHumanName" : { HumanName }, //Specified value if missing from instance
    "defaultValueIdentifier" : { Identifier }, //Specified value if missing from instance
    "defaultValueMoney" : { Money }, //Specified value if missing from instance
    "defaultValuePeriod" : { Period }, //Specified value if missing from instance
    "defaultValueQuantity" : { Quantity }, //Specified value if missing from instance
    "defaultValueRange" : { Range }, //Specified value if missing from instance
    "defaultValueRatio" : { Ratio }, //Specified value if missing from instance
    "defaultValueReference" : { Reference }, //Specified value if missing from instance
    "defaultValueSampledData" : { SampledData }, //Specified value if missing from instance
    "defaultValueSignature" : { Signature }, //Specified value if missing from instance
    "defaultValueTiming" : { Timing }, //Specified value if missing from instance
    "defaultValueDosage" : { Dosage }, //Specified value if missing from instance
    "defaultValueContactDetail" : { ContactDetail }, //Specified value if missing from instance
    "defaultValueContributor" : { Contributor }, //Specified value if missing from instance
    "defaultValueDataRequirement" : { DataRequirement }, //Specified value if missing from instance
    "defaultValueParameterDefinition" : { ParameterDefinition }, //Specified value if missing from instance
    "defaultValueRelatedArtifact" : { RelatedArtifact }, //Specified value if missing from instance
    "defaultValueTriggerDefinition" : { TriggerDefinition }, //Specified value if missing from instance
    "defaultValueUsageContext" : { UsageContext }, //Specified value if missing from instance
    "defaultValueMeta" : { Meta }, //Specified value if missing from instance
    "meaningWhenMissing" : "<markdown>", //Implicit meaning when this element is missing
    "orderMeaning" : "<string>", //What the order of the elements means
// value[x]: Value must be exactly this. One of these 46:
// value[x]: Value must have at least these property values. One of these 46:
    "example" : [{ Element }], // C?Example value (as defined for type)
// value[x]: Minimum Allowed Value (for some types). One of these 9:
    "minValueDate" : "<date>", //Minimum Allowed Value (for some types)
    "minValueDateTime" : "<dateTime>", //Minimum Allowed Value (for some types)
    "minValueInstant" : "<instant>", //Minimum Allowed Value (for some types)
    "minValueTime" : "<time>", //Minimum Allowed Value (for some types)
    "minValueDecimal" : <decimal>, //Minimum Allowed Value (for some types)
    "minValueInteger" : <integer>, //Minimum Allowed Value (for some types)
    "minValuePositiveInt" : "<positiveInt>", //Minimum Allowed Value (for some types)
    "minValueUnsignedInt" : "<unsignedInt>", //Minimum Allowed Value (for some types)
    "minValueQuantity" : { Quantity }, //Minimum Allowed Value (for some types)
// value[x]: Maximum Allowed Value (for some types). One of these 9:
    "maxValueDate" : "<date>", //Maximum Allowed Value (for some types)
    "maxValueDateTime" : "<dateTime>", //Maximum Allowed Value (for some types)
    "maxValueInstant" : "<instant>", //Maximum Allowed Value (for some types)
    "maxValueTime" : "<time>", //Maximum Allowed Value (for some types)
    "maxValueDecimal" : <decimal>, //Maximum Allowed Value (for some types)
    "maxValueInteger" : <integer>, //Maximum Allowed Value (for some types)
    "maxValuePositiveInt" : "<positiveInt>", //Maximum Allowed Value (for some types)
    "maxValueUnsignedInt" : "<unsignedInt>", //Maximum Allowed Value (for some types)
    "maxValueQuantity" : { Quantity }, //Maximum Allowed Value (for some types)
    "maxLength" : <integer>, //Max length for strings
    "condition" : ["<id>"], //Reference to invariant about presence
    "constraint" : [{ Element }], // C?Condition that must evaluate to true
    "mustSupport" : <boolean>, //If the element must supported
    "binding" : { Element }, // C?ValueSet details if this is coded
    "mapping" : [{ Element }], // C?Map element to another set of definitions
  }

Alternate definitions: Master Definition (XML, JSON), Schematron

Terminology Bindings

Path	Name	Conformance	ValueSet
ElementDefinition.extension.value[x]	UCUM Codes	required	UCUM Codes
ElementDefinition.code	LOINC Codes	example	LOINC Codes
ElementDefinition.slicing.discriminator.type	DiscriminatorType	required	DiscriminatorType
ElementDefinition.slicing.rules	SlicingRules	required	SlicingRules
ElementDefinition.type.code	FHIRDefinedType	extensible	FHIRDefinedType
ElementDefinition.type.versioning	ReferenceVersionRules	required	ReferenceVersionRules
ElementDefinition.constraint.severity	ConstraintSeverity	required	ConstraintSeverity
ElementDefinition.binding.strength	BindingStrength	required	BindingStrength
ElementDefinition.mapping.language	?ext	required	http://www.rfc-editor.org/bcp/bcp13.txt

Constraints

Id	Path	Details	Requirements
eld-3	ElementDefinition.max	Max SHALL be a number or "" Expression: empty() or ($this = '') or (toInteger() >= 0)
eld-12	ElementDefinition.binding	ValueSet as a URI SHALL start with http:// or https:// or urn: Expression: valueSet.is(uri).not() or valueSet.as(uri).startsWith('http:') or valueSet.as(uri).startsWith('https') or valueSet.as(uri).startsWith('urn:')