This structure is derived from ElementDefinition .

Summary

Prohibited: 10 elements

Extensions

This structure refers to these extensions:

• http://hl7.org/fhir/StructureDefinition/elementdefinition-question
• http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits

This structure is derived from indicates the differences between this profile and the base ElementDefinition . structure.

Name	Flags	Card.	Type	Description & Constraints
ElementDefinition		0..*	ElementDefinition	Definition of an element in a resource or extension
elementdefinition-question Question		0..*	string	Prompt for element phrased as question URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-question
elementdefinition-allowedUnits AllowedUnits		0..1	CodeableConcept , canonical ( ValueSet )	Units to use for measured value URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits Binding: UCUM Codes ( required )
representation		0 .. 0
slicing		0 .. 0
short		0 .. 0
contentReference		0 .. 0
type		0 .. *	Element	Data type and Profile for this element
profile		0 .. 0
aggregation		0 .. 0
defaultValue[x]		0 .. 1	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 , Contributor , DataRequirement , Expression , ParameterDefinition , RelatedArtifact , TriggerDefinition , UsageContext , Availability , ExtendedContactDetail , Dosage , Meta	Specified value if missing from instance
meaningWhenMissing		0 .. 1	markdown	Implicit meaning when this element is missing
fixed[x]		0 .. 0
pattern[x]		0 .. 0
isModifier		0 .. 0
isSummary		0 .. 0
Documentation for this format

This provides the consolidated view (aka snapshot) of the profile after applying the changes in this profile to the base ElementDefinition structure.

Name	Flags	Card.	Type	Description & Constraints
ElementDefinition	I C	0..*	ElementDefinition	Definition of an element in a resource or extension
id		0..1	id	Unique id for inter-element referencing
Slices for extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
elementdefinition-question Question		0..*	string	Prompt for element phrased as question URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-question
elementdefinition-allowedUnits AllowedUnits		0..1	CodeableConcept , canonical ( ValueSet )	Units to use for measured value URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits Binding: UCUM Codes ( required )
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
path	Σ	1..1	string	Path of the element in the hierarchy of elements
sliceName	Σ	0..1	string	Name for this particular element (in a set of slices)
sliceIsConstraining	Σ TU	0..1	boolean	If this slice definition constrains an inherited slice definition (or not)
label	Σ	0..1	string	Name for element to display with or prompt for element
code	Σ	0..*	Coding	Corresponding codes in terminologies Binding: LOINC Codes ???? ( example )
definition	Σ	0..1	markdown	Full formal definition as narrative text
comment	Σ	0..1	markdown	Comments about the use of this element
requirements	Σ	0..1	markdown	Why this resource has been created
alias	Σ	0..*	string	Other names
min	Σ I C	0..1	unsignedInt	Minimum Cardinality
max	Σ I C	0..1	string	Maximum Cardinality (a number or *)
base	Σ	0..1	Element	Base definition information for tools
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
path	Σ	1..1	string	Path that identifies the base element
min	Σ	1..1	unsignedInt	Min cardinality of the base element
max	Σ	1..1	string	Max cardinality of the base element
type	Σ I C	0..*	Element	Data type and Profile for this element
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
code	Σ	1..1	uri	Data type or Resource (reference to definition) Binding: Common Tags Element Definition Types ( extensible )
targetProfile	Σ	0..*	canonical ( StructureDefinition | ImplementationGuide )	Profile (StructureDefinition or IG) on the Reference/canonical target - one must apply
versioning	Σ	0..1	code	either | independent | specific Binding: ReferenceVersionRules ( required )
defaultValue[x]	Σ I C	0..1		Specified value if missing from instance
defaultValueBase64Binary			base64Binary
defaultValueBoolean			boolean
defaultValueCanonical			canonical (Any)
defaultValueCode			code
defaultValueDate			date
defaultValueDateTime			dateTime
defaultValueDecimal			decimal
defaultValueId			id
defaultValueInstant			instant
defaultValueInteger			integer
defaultValueMarkdown defaultValueInteger64			markdown integer64
defaultValueOid defaultValueMarkdown			oid markdown
defaultValuePositiveInt defaultValueOid			positiveInt oid
defaultValueString defaultValuePositiveInt			string positiveInt
defaultValueTime defaultValueString			time string
defaultValueUnsignedInt defaultValueTime			unsignedInt time
defaultValueUri defaultValueUnsignedInt			uri unsignedInt
defaultValueUrl defaultValueUri			url uri
defaultValueUuid defaultValueUrl			uuid url
defaultValueAddress defaultValueUuid			Address uuid
defaultValueAge defaultValueAddress			Age Address
defaultValueAnnotation defaultValueAge			Annotation Age
defaultValueAttachment defaultValueAnnotation			Attachment Annotation
defaultValueCodeableConcept defaultValueAttachment			CodeableConcept Attachment
defaultValueCodeableReference defaultValueCodeableConcept			CodeableReference CodeableConcept
defaultValueCoding defaultValueCodeableReference			Coding CodeableReference
defaultValueContactPoint defaultValueCoding			ContactPoint Coding
defaultValueCount defaultValueContactPoint			Count ContactPoint
defaultValueDistance defaultValueCount			Distance Count
defaultValueDuration defaultValueDistance			Duration Distance
defaultValueHumanName defaultValueDuration			HumanName Duration
defaultValueIdentifier defaultValueHumanName			Identifier HumanName
defaultValueMoney defaultValueIdentifier			Money Identifier
defaultValuePeriod defaultValueMoney			Period Money
defaultValueQuantity defaultValuePeriod			Quantity Period
defaultValueRange defaultValueQuantity			Range Quantity
defaultValueRatio defaultValueRange			Ratio Range
defaultValueRatioRange defaultValueRatio			RatioRange Ratio
defaultValueReference defaultValueRatioRange			Reference RatioRange (Any)
defaultValueSampledData defaultValueReference			SampledData Reference (Any)
defaultValueSignature defaultValueSampledData			Signature SampledData
defaultValueTiming defaultValueSignature			Timing Signature
defaultValueContactDetail defaultValueTiming			ContactDetail Timing
defaultValueContributor defaultValueContactDetail			Contributor ContactDetail
defaultValueDataRequirement			DataRequirement
defaultValueExpression			Expression
defaultValueParameterDefinition			ParameterDefinition
defaultValueRelatedArtifact			RelatedArtifact
defaultValueTriggerDefinition			TriggerDefinition
defaultValueUsageContext			UsageContext
defaultValueDosage defaultValueAvailability			Availability
defaultValueExtendedContactDetail			ExtendedContactDetail
defaultValueDosage			Dosage
defaultValueMeta			Meta
meaningWhenMissing	Σ I C	0..1	markdown	Implicit meaning when this element is missing
orderMeaning	Σ	0..1	string	What the order of the elements means
example	Σ	0..*	Element	Example value (as defined for type)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
label	Σ	1..1	string	Describes the purpose of this example
value[x]	Σ	1..1		Value of Example (one of allowed types)
valueBase64Binary			base64Binary
valueBoolean			boolean
valueCanonical			canonical (Any)
valueCode			code
valueCode valueDate			code date
valueDate valueDateTime			date dateTime
valueDateTime valueDecimal			dateTime decimal
valueDecimal valueId			decimal id
valueId valueInstant			id instant
valueInstant valueInteger			instant integer
valueInteger valueInteger64			integer integer64
valueMarkdown			markdown
valueOid			oid
valuePositiveInt			positiveInt
valueString			string
valueTime			time
valueUnsignedInt			unsignedInt
valueUri			uri
valueUrl			url
valueUuid			uuid
valueAddress			Address
valueAge			Age
valueAnnotation			Annotation
valueAttachment			Attachment
valueCodeableConcept			CodeableConcept
valueCodeableReference			CodeableReference
valueCoding			Coding
valueContactPoint			ContactPoint
valueCount			Count
valueDistance			Distance
valueDuration			Duration
valueHumanName			HumanName
valueIdentifier			Identifier
valueMoney			Money
valuePeriod			Period
valueQuantity			Quantity
valueRange			Range
valueRatio			Ratio
valueRatioRange			RatioRange
valueReference			Reference (Any)
valueSampledData			SampledData
valueSignature			Signature
valueTiming			Timing
valueContactDetail			ContactDetail
valueContributor valueDataRequirement			Contributor DataRequirement
valueDataRequirement valueExpression			DataRequirement Expression
valueExpression valueParameterDefinition			Expression ParameterDefinition
valueParameterDefinition valueRelatedArtifact			ParameterDefinition RelatedArtifact
valueRelatedArtifact valueTriggerDefinition			RelatedArtifact TriggerDefinition
valueTriggerDefinition valueUsageContext			TriggerDefinition UsageContext
valueUsageContext valueAvailability			UsageContext Availability
valueDosage valueExtendedContactDetail			ExtendedContactDetail
valueDosage			Dosage
valueMeta			Meta
minValue[x]	Σ	0..1		Minimum Allowed Value (for some types)
minValueDate			date
minValueDateTime			dateTime
minValueInstant			instant
minValueTime			time
minValueDecimal			decimal
minValueInteger			integer
minValuePositiveInt minValueInteger64			positiveInt integer64
minValueUnsignedInt minValuePositiveInt			positiveInt
minValueUnsignedInt			unsignedInt
minValueQuantity			Quantity
maxValue[x]	Σ	0..1		Maximum Allowed Value (for some types)
maxValueDate			date
maxValueDateTime			dateTime
maxValueDateTime maxValueInstant			dateTime instant
maxValueInstant maxValueTime			instant time
maxValueTime maxValueDecimal			time decimal
maxValueDecimal maxValueInteger			decimal integer
maxValueInteger maxValueInteger64			integer integer64
maxValuePositiveInt			positiveInt
maxValueUnsignedInt			unsignedInt
maxValueQuantity			Quantity
maxLength	Σ	0..1	integer	Max length for strings string type data
condition	Σ	0..*	id	Reference to invariant about presence
constraint	Σ I C	0..*	Element	Condition that must evaluate to true
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
key	Σ I C	1..1	id	Target of 'condition' reference above
requirements	Σ	0..1	string markdown	Why this constraint is necessary or appropriate
severity	Σ	1..1	code	error | warning Binding: ConstraintSeverity ( required )
human suppress	Σ	1..1 0..1	string boolean	Human description of constraint Suppress warning or hint in profile
expression human	Σ	0..1 1..1	string	FHIRPath expression Human description of constraint
xpath expression	Σ	0..1	string	XPath FHIRPath expression of constraint
source	Σ	0..1	canonical ( StructureDefinition )	Reference to original source of constraint
mustHaveValue	Σ TU	0..1	boolean	For primitives, that a value must be present - not replaced by an extension
valueAlternatives	Σ TU	0..*	canonical ( StructureDefinition )	Extensions that are allowed to replace a primitive value
mustSupport	Σ	0..1	boolean	If the element must be supported (discouraged - see obligations)
obligation	Σ TU	0..*	Element	Documents obligations for applications making use of this element
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
code	Σ TU	1..1	Coding	Combination code describing the nature of the obligation Binding: Obligation Codes ValueSet ( extensible )
actor	Σ TU	0..*	canonical ( ActorDefinition )	Actor(s) this obligation applies to (all actors if none)
documentation	Σ TU	0..1	markdown	Documentation of the purpose or application of the obligation
usage	Σ TU	0..*	UsageContext	Qualifies the usage - jurisdiction, gender, workflow status etc
filter	Σ TU	0..1	string	Limits obligation to some repeats by FHIRPath
filterDocumentation	Σ TU	0..1	string	Ddescribes the intent of the filter (short)
process	Σ TU	0..*	uri	The obligation only applies when perfomring the indicated process
isModifierReason	Σ	0..1	string	Reason that this element is marked as a modifier
binding	Σ I C	0..1	Element	ValueSet details if this is coded
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
strength	Σ	1..1	code	required | extensible | preferred | example Binding: BindingStrength ( required )
description	Σ	0..1	string markdown	Human explanation Intended use of codes in the bound value set
valueSet	Σ I C	0..1	canonical ( ValueSet )	Source of value set
mapping additional	Σ TU	0..*	Element	Additional Bindings - more rules about the binding
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
purpose	Σ TU	1..1	code	maximum | minimum | required | extensible | candidate | current | preferred | ui | starter | component Binding: Additional Binding Purpose ValueSet ( required )
valueSet	Σ TU	1..1	canonical ( ValueSet )	The value set for the additional binding
documentation	Σ TU	0..1	markdown	Documentation of the purpose of use of the binding
shortDoco	Σ TU	0..1	string	Concise documentation - for summary tables
usage	Σ TU	0..*	UsageContext	Qualifies the usage - jurisdiction, gender, workflow status etc
any	Σ TU	0..1	boolean	Whether binding can applies to all repeats, or just one
mapping	Σ	0..*	Element	Map element to another set of definitions
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
identity	Σ	1..1	id	Reference to mapping declaration
language	Σ	0..1	code	Computable language of mapping Binding: MimeType Mime Types ( required ): BCP 13 (RFCs 2045, 2046, 2047, 4288, 4289 and 2049)
map	Σ	1..1	string	Details of the mapping
comment	Σ	0..1	string markdown	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 -->
 <Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>
 <
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Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself) (this element modifies the meaning of other elements)" class="dict">modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>
 <path value="[string]"/><!-- I 1..1 Path of the element in the hierarchy of elements -->
 <representation value="[code]"/><!-- I 0..0 xmlAttr | xmlText | typeAttr | cdaText | xhtml -->
 <sliceName value="[string]"/><!-- I 0..1 Name for this particular element (in a set of slices) -->
 <sliceIsConstraining value="[boolean]"/><!-- I 0..1 

     If this slice definition constrains an inherited slice definition (or not) -->
 <
 <</code>
 <

 <label value="[string]"/><!-- I 0..1 Name for element to display with or prompt for element -->
 <code><!-- I 0..* Coding Corresponding codes in terminologies --></code>
 <slicing> I 0..0 Element  <!-- I 0..0 This element is sliced - slices follow -->

 </slicing>
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 <
 <
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  <
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 <short value="[string]"/><!-- I 0..0 Concise definition for space-constrained presentation -->
 <definition value="[markdown]"/><!-- I 0..1 Full formal definition as narrative text -->
 <comment value="[markdown]"/><!-- I 0..1 Comments about the use of this element -->
 <requirements value="[markdown]"/><!-- I 0..1 Why this resource has been created -->
 <alias value="[string]"/><!-- I 0..* Other names -->
 <min value="[unsignedInt]"/><!-- I 0..1 Minimum Cardinality -->
 <max value="[string]"/><!-- I 0..1 Maximum Cardinality (a number or *) -->
 <base> I 0..1 Element  <!-- I 0..1 Base definition information for tools -->
  <path value="[string]"/><!-- I 1..1 Path that identifies the base element -->
  <min value="[unsignedInt]"/><!-- I 1..1 Min cardinality of the base element -->
  <max value="[string]"/><!-- I 1..1 Max cardinality of the base element -->

 </base>
 <
 <
  <
  <
  <

 <contentReference value="[uri]"/><!-- I 0..0 Reference to definition of content for the element -->
 <type> I 0..* Element  <!-- I 0..* Data type and Profile for this element -->
  <code value="[uri]"/><!-- I 1..1 Data type or Resource (reference to definition) -->
  <profile value="[canonical]"/><!-- I 0..0 Profiles (StructureDefinition or IG) - one must apply -->
  <targetProfile value="[canonical]"/><!-- I 0..* 

      Profile (StructureDefinition or IG) on the Reference/canonical target - one must apply -->
  <
  <

  <aggregation value="[code]"/><!-- I 0..0 contained | referenced | bundled - how aggregated -->
  <versioning value="[code]"/><!-- I 0..1 either | independent | specific -->

 </type>
 <|
   |

 <defaultValue[x]><!-- I 0..1 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 

     Specified value if missing from instance --></defaultValue[x]>
 <meaningWhenMissing value="[markdown]"/><!-- I 0..1 Implicit meaning when this element is missing -->
 <orderMeaning value="[string]"/><!-- I 0..1 What the order of the elements means -->
 <fixed[x]><!-- I 0..0 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|
   |
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   </defaultValue[x]>
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   SampledData|Signature|Timing|ContactDetail|DataRequirement|Expression|
   ParameterDefinition|RelatedArtifact|TriggerDefinition|UsageContext|
   Availability|ExtendedContactDetail|Dosage|Meta 
     Value must be exactly this --></fixed[x]>
 <<a href="elementdefinition-de-definitions.html#ElementDefinition.pattern[x]" title="Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example.  

 <When pattern[x] is used to constrain an array, it means that each element provided in the pattern[x] array must (recursively) match at least one element from the instance array.

When an element within a pattern[x] is used to constrain an array, it means that each element provided in the pattern[x] must (recursively) match at least one element from the instance array.


When pattern[x] is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value." class="dict">|
   |
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3. If an array: it must match (recursively) the pattern value

If a pattern[x] is declared on a repeating element, the pattern applies to all repetitions.  If the desire is for a pattern to apply to only one element or a subset of elements, slicing must be used. See [Examples of Patterns](elementdefinition-examples.html#pattern-examples) for examples of pattern usage and the effect it will have." class="dict">pattern[x]><!-- I 0..0 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 
     Value must have at least these property values --></pattern[x]>
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 <example> I 0..* Element  <!-- I 0..* Example value (as defined for type) -->
  <label value="[string]"/><!-- I 1..1 Describes the purpose of this example -->
  <value[x]><!-- I 1..1 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|
    
      Value of Example (one of allowed types)</value[x]>

    TriggerDefinition|UsageContext|Availability|ExtendedContactDetail|Dosage|
    Meta Value of Example (one of allowed types) --></value[x]>
 </example>
 <|
   

 <minValue[x]><!-- I 0..1 date|dateTime|instant|time|decimal|
   integer|integer64|positiveInt|unsignedInt|Quantity 
     Minimum Allowed Value (for some types) --></minValue[x]>
 <|
   

 <maxValue[x]><!-- I 0..1 date|dateTime|instant|time|decimal|
   integer|integer64|positiveInt|unsignedInt|Quantity 
     Maximum Allowed Value (for some types) --></maxValue[x]>
 <
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 <maxLength value="[integer]"/><!-- I 0..1 Max length for string type data -->
 <condition value="[id]"/><!-- I 0..* Reference to invariant about presence -->
 <constraint> I 0..* Element  <!-- I 0..* Condition that must evaluate to true -->
  <key value="[id]"/><!-- I 1..1 Target of 'condition' reference above -->
  <requirements value="[markdown]"/><!-- I 0..1 Why this constraint is necessary or appropriate -->
  <severity value="[code]"/><!-- I 1..1 error | warning -->
  <suppress value="[boolean]"/><!-- I 0..1 Suppress warning or hint in profile -->
  <human value="[string]"/><!-- I 1..1 Human description of constraint -->
  <expression value="[string]"/><!-- I 0..1 FHIRPath expression of constraint -->
  <source value="[canonical]"/><!-- I 0..1 Reference to original source of constraint -->

 </constraint>
 <
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  <

 <mustHaveValue value="[boolean]"/><!-- I 0..1 
     For primitives, that a value must be present - not replaced by an extension -->
 <valueAlternatives value="[canonical]"/><!-- I 0..* Extensions that are allowed to replace a primitive value -->
 <mustSupport value="[boolean]"/><!-- I 0..1 If the element must be supported (discouraged - see obligations) -->
 <obligation> I 0..* Element  <!-- I 0..* Documents obligations for applications making use of this element -->
  <code><!-- I 1..1 Coding Combination code describing the nature of the obligation --></code>
  <actor value="[canonical]"/><!-- I 0..* Actor(s) this obligation applies to (all actors if none) -->
  <documentation value="[markdown]"/><!-- I 0..1 
      Documentation of the purpose or application of the obligation -->
  <usage><!-- I 0..* UsageContext 
      Qualifies the usage - jurisdiction, gender, workflow status etc --></usage>
  <filter value="[string]"/><!-- I 0..1 Limits obligation to some repeats by FHIRPath -->
  <filterDocumentation value="[string]"/><!-- I 0..1 Ddescribes the intent of the filter (short) -->
  <process value="[uri]"/><!-- I 0..* 
      The obligation only applies when perfomring the indicated process -->
 </obligation>
 <isModifier value="[boolean]"/><!-- I 0..0 If this modifies the meaning of other elements -->
 <isModifierReason value="[string]"/><!-- I 0..1 Reason that this element is marked as a modifier -->
 <isSummary value="[boolean]"/><!-- I 0..0 Include when _summary = true? -->
 <binding> I 0..1 Element  <!-- I 0..1 ValueSet details if this is coded -->
  <strength value="[code]"/><!-- I 1..1 required | extensible | preferred | example -->
  <description value="[markdown]"/><!-- I 0..1 Intended use of codes in the bound value set -->
  <valueSet value="[canonical]"/><!-- I 0..1 Source of value set -->
  <additional> I 0..* Element  <!-- I 0..* Additional Bindings - more rules about the binding -->
   <purpose value="[code]"/><!-- I 1..1 maximum | minimum | required | extensible | candidate | current | preferred | ui | starter | component -->
   <valueSet value="[canonical]"/><!-- I 1..1 The value set for the additional binding -->
   <documentation value="[markdown]"/><!-- I 0..1 
       Documentation of the purpose of use of the binding -->
   <shortDoco value="[string]"/><!-- I 0..1 Concise documentation - for summary tables -->
   <usage><!-- I 0..* UsageContext 
       Qualifies the usage - jurisdiction, gender, workflow status etc --></usage>
   <any value="[boolean]"/><!-- I 0..1 Whether binding can applies to all repeats, or just one -->
  </additional>

 </binding>
 <
  <
  <
  <
  <

 <mapping> I 0..* Element  <!-- I 0..* Map element to another set of definitions -->
  <identity value="[id]"/><!-- I 1..1 Reference to mapping declaration -->
  <language value="[code]"/><!-- I 0..1 Computable language of mapping -->
  <map value="[string]"/><!-- I 1..1 Details of the mapping -->
  <comment value="[markdown]"/><!-- I 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 
      { // 

      { // Prompt for element phrased as question // I

        // from Element: extension
      },
      { // 

      { // Units to use for measured value // I

        // from Element: extension
      }
    ],
    "Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself) (this element modifies the meaning of other elements)" class="dict">
    "
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Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself) (this element modifies the meaning of other elements)" class="dict">modifierExtension" : [{ Extension }], // IExtensions that cannot be ignored even if unrecognized
    "path" : "<string>", // I R! Path of the element in the hierarchy of elements
    "sliceName" : "<string>", // IName for this particular element (in a set of slices)
    "sliceIsConstraining" : <boolean>, // IIf this slice definition constrains an inherited slice definition (or not)
    "label" : "<string>", // IName for element to display with or prompt for element
    "code" : [{ Coding }], // ICorresponding codes in terminologies
    "definition" : "<markdown>", // IFull formal definition as narrative text
    "comment" : "<markdown>", // IComments about the use of this element
    "requirements" : "<markdown>", // IWhy this resource has been created
    "alias" : ["<string>"], // IOther names
    "min" : "<unsignedInt>", // IMinimum Cardinality
    "max" : "<string>", // IMaximum Cardinality (a number or *)
    "base" : { Element }, // IBase definition information for tools
    "type" : [{ Element }], // IData type and Profile for this element
  // value[x]: Specified value if missing from instance. One of these 54:

    "defaultValueBase64Binary" : "<base64Binary>", // ISpecified value if missing from instance
    "defaultValueBoolean" : <boolean>, // ISpecified value if missing from instance
    "defaultValueCanonical" : "<canonical>", // ISpecified value if missing from instance
    "defaultValueCode" : "<code>", // ISpecified value if missing from instance
    "defaultValueDate" : "<date>", // ISpecified value if missing from instance
    "defaultValueDateTime" : "<dateTime>", // ISpecified value if missing from instance
    "defaultValueDecimal" : <decimal>, // ISpecified value if missing from instance
    "defaultValueId" : "<id>", // ISpecified value if missing from instance
    "defaultValueInstant" : "<instant>", // ISpecified value if missing from instance
    "defaultValueInteger" : <integer>, // ISpecified value if missing from instance
    "defaultValueInteger64" : "<integer64>", // ISpecified value if missing from instance
    "defaultValueMarkdown" : "<markdown>", // ISpecified value if missing from instance
    "defaultValueOid" : "<oid>", // ISpecified value if missing from instance
    "defaultValuePositiveInt" : "<positiveInt>", // ISpecified value if missing from instance
    "defaultValueString" : "<string>", // ISpecified value if missing from instance
    "defaultValueTime" : "<time>", // ISpecified value if missing from instance
    "defaultValueUnsignedInt" : "<unsignedInt>", // ISpecified value if missing from instance
    "defaultValueUri" : "<uri>", // ISpecified value if missing from instance
    "defaultValueUrl" : "<url>", // ISpecified value if missing from instance
    "defaultValueUuid" : "<uuid>", // ISpecified value if missing from instance
    "defaultValueAddress" : { Address }, // ISpecified value if missing from instance
    "defaultValueAge" : { Age }, // ISpecified value if missing from instance
    "defaultValueAnnotation" : { Annotation }, // ISpecified value if missing from instance
    "defaultValueAttachment" : { Attachment }, // ISpecified value if missing from instance
    "defaultValueCodeableConcept" : { CodeableConcept }, // ISpecified value if missing from instance
    "defaultValueCodeableReference" : { CodeableReference }, // ISpecified value if missing from instance
    "defaultValueCoding" : { Coding }, // ISpecified value if missing from instance
    "defaultValueContactPoint" : { ContactPoint }, // ISpecified value if missing from instance
    "defaultValueCount" : { Count }, // ISpecified value if missing from instance
    "defaultValueDistance" : { Distance }, // ISpecified value if missing from instance
    "defaultValueDuration" : { Duration }, // ISpecified value if missing from instance
    "defaultValueHumanName" : { HumanName }, // ISpecified value if missing from instance
    "defaultValueIdentifier" : { Identifier }, // ISpecified value if missing from instance
    "defaultValueMoney" : { Money }, // ISpecified value if missing from instance
    "defaultValuePeriod" : { Period }, // ISpecified value if missing from instance
    "defaultValueQuantity" : { Quantity }, // ISpecified value if missing from instance
    "defaultValueRange" : { Range }, // ISpecified value if missing from instance
    "defaultValueRatio" : { Ratio }, // ISpecified value if missing from instance
    "defaultValueRatioRange" : { RatioRange }, // ISpecified value if missing from instance
    "defaultValueReference" : { Reference }, // ISpecified value if missing from instance
    "defaultValueSampledData" : { SampledData }, // ISpecified value if missing from instance
    "defaultValueSignature" : { Signature }, // ISpecified value if missing from instance
    "defaultValueTiming" : { Timing }, // ISpecified value if missing from instance
    "defaultValueContactDetail" : { ContactDetail }, // ISpecified value if missing from instance
    "defaultValueDataRequirement" : { DataRequirement }, // ISpecified value if missing from instance
    "defaultValueExpression" : { Expression }, // ISpecified value if missing from instance
    "defaultValueParameterDefinition" : { ParameterDefinition }, // ISpecified value if missing from instance
    "defaultValueRelatedArtifact" : { RelatedArtifact }, // ISpecified value if missing from instance
    "defaultValueTriggerDefinition" : { TriggerDefinition }, // ISpecified value if missing from instance
    "defaultValueUsageContext" : { UsageContext }, // ISpecified value if missing from instance
    "defaultValueAvailability" : { Availability }, // ISpecified value if missing from instance
    "defaultValueExtendedContactDetail" : { ExtendedContactDetail }, // ISpecified value if missing from instance
    "defaultValueDosage" : { Dosage }, // ISpecified value if missing from instance
    "defaultValueMeta" : { Meta }, // ISpecified value if missing from instance
    "meaningWhenMissing" : "<markdown>", // IImplicit meaning when this element is missing
    "orderMeaning" : "<string>", // IWhat the order of the elements means
  // value[x]: Value must be exactly this. One of these 54:
  // value[x]: Value must have at least these property values. One of these 54:

    "example" : [{ Element }], // IExample value (as defined for type)
  // value[x]: Minimum Allowed Value (for some types). One of these 10:

    "minValueDate" : "<date>", // IMinimum Allowed Value (for some types)
    "minValueDateTime" : "<dateTime>", // IMinimum Allowed Value (for some types)
    "minValueInstant" : "<instant>", // IMinimum Allowed Value (for some types)
    "minValueTime" : "<time>", // IMinimum Allowed Value (for some types)
    "minValueDecimal" : <decimal>, // IMinimum Allowed Value (for some types)
    "minValueInteger" : <integer>, // IMinimum Allowed Value (for some types)
    "minValueInteger64" : "<integer64>", // IMinimum Allowed Value (for some types)
    "minValuePositiveInt" : "<positiveInt>", // IMinimum Allowed Value (for some types)
    "minValueUnsignedInt" : "<unsignedInt>", // IMinimum Allowed Value (for some types)
    "minValueQuantity" : { Quantity }, // IMinimum Allowed Value (for some types)
  // value[x]: Maximum Allowed Value (for some types). One of these 10:

    "maxValueDate" : "<date>", // IMaximum Allowed Value (for some types)
    "maxValueDateTime" : "<dateTime>", // IMaximum Allowed Value (for some types)
    "maxValueInstant" : "<instant>", // IMaximum Allowed Value (for some types)
    "maxValueTime" : "<time>", // IMaximum Allowed Value (for some types)
    "maxValueDecimal" : <decimal>, // IMaximum Allowed Value (for some types)
    "maxValueInteger" : <integer>, // IMaximum Allowed Value (for some types)
    "maxValueInteger64" : "<integer64>", // IMaximum Allowed Value (for some types)
    "maxValuePositiveInt" : "<positiveInt>", // IMaximum Allowed Value (for some types)
    "maxValueUnsignedInt" : "<unsignedInt>", // IMaximum Allowed Value (for some types)
    "maxValueQuantity" : { Quantity }, // IMaximum Allowed Value (for some types)
    "maxLength" : <integer>, // IMax length for string type data
    "condition" : ["<id>"], // IReference to invariant about presence
    "constraint" : [{ Element }], // ICondition that must evaluate to true
    "mustHaveValue" : <boolean>, // IFor primitives, that a value must be present - not replaced by an extension
    "valueAlternatives" : ["<canonical>"], // IExtensions that are allowed to replace a primitive value
    "mustSupport" : <boolean>, // IIf the element must be supported (discouraged - see obligations)
    "obligation" : [{ Element }], // IDocuments obligations for applications making use of this element
    "isModifierReason" : "<string>", // IReason that this element is marked as a modifier
    "binding" : { Element }, // IValueSet details if this is coded
    "mapping" : [{ Element }], // IMap element to another set of definitions

  }

Summary

Prohibited: 10 elements

Extensions

This structure refers to these extensions:

• http://hl7.org/fhir/StructureDefinition/elementdefinition-question
• http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits

This provides the consolidated view (aka snapshot) of the profile after applying the changes in this profile to the base ElementDefinition structure.

Name	Flags	Card.	Type	Description & Constraints
ElementDefinition	I C	0..*	ElementDefinition	Definition of an element in a resource or extension
id		0..1	id	Unique id for inter-element referencing
Slices for extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
elementdefinition-question Question		0..*	string	Prompt for element phrased as question URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-question
elementdefinition-allowedUnits AllowedUnits		0..1	CodeableConcept , canonical ( ValueSet )	Units to use for measured value URL: http://hl7.org/fhir/StructureDefinition/elementdefinition-allowedUnits Binding: UCUM Codes ( required )
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
path	Σ	1..1	string	Path of the element in the hierarchy of elements
sliceName	Σ	0..1	string	Name for this particular element (in a set of slices)
sliceIsConstraining	Σ TU	0..1	boolean	If this slice definition constrains an inherited slice definition (or not)
label	Σ	0..1	string	Name for element to display with or prompt for element
code	Σ	0..*	Coding	Corresponding codes in terminologies Binding: LOINC Codes ???? ( example )
definition	Σ	0..1	markdown	Full formal definition as narrative text
comment	Σ	0..1	markdown	Comments about the use of this element
requirements	Σ	0..1	markdown	Why this resource has been created
alias	Σ	0..*	string	Other names
min	Σ I C	0..1	unsignedInt	Minimum Cardinality
max	Σ I C	0..1	string	Maximum Cardinality (a number or *)
base	Σ	0..1	Element	Base definition information for tools
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
path	Σ	1..1	string	Path that identifies the base element
min	Σ	1..1	unsignedInt	Min cardinality of the base element
max	Σ	1..1	string	Max cardinality of the base element
type	Σ I C	0..*	Element	Data type and Profile for this element
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
code	Σ	1..1	uri	Data type or Resource (reference to definition) Binding: Common Tags Element Definition Types ( extensible )
targetProfile	Σ	0..*	canonical ( StructureDefinition | ImplementationGuide )	Profile (StructureDefinition or IG) on the Reference/canonical target - one must apply
versioning	Σ	0..1	code	either | independent | specific Binding: ReferenceVersionRules ( required )
defaultValue[x]	Σ I C	0..1		Specified value if missing from instance
defaultValueBase64Binary			base64Binary
defaultValueBoolean			boolean
defaultValueCanonical			canonical (Any)
defaultValueCode			code
defaultValueDate			date
defaultValueDateTime			dateTime
defaultValueDecimal			decimal
defaultValueId			id
defaultValueInstant			instant
defaultValueInteger			integer
defaultValueMarkdown defaultValueInteger64			markdown integer64
defaultValueOid defaultValueMarkdown			oid markdown
defaultValuePositiveInt defaultValueOid			positiveInt oid
defaultValueString defaultValuePositiveInt			string positiveInt
defaultValueTime defaultValueString			time string
defaultValueUnsignedInt defaultValueTime			unsignedInt time
defaultValueUri defaultValueUnsignedInt			uri unsignedInt
defaultValueUrl defaultValueUri			url uri
defaultValueUuid defaultValueUrl			uuid url
defaultValueAddress defaultValueUuid			Address uuid
defaultValueAge defaultValueAddress			Age Address
defaultValueAnnotation defaultValueAge			Annotation Age
defaultValueAttachment defaultValueAnnotation			Attachment Annotation
defaultValueCodeableConcept defaultValueAttachment			CodeableConcept Attachment
defaultValueCodeableReference defaultValueCodeableConcept			CodeableReference CodeableConcept
defaultValueCoding defaultValueCodeableReference			Coding CodeableReference
defaultValueContactPoint defaultValueCoding			ContactPoint Coding
defaultValueCount defaultValueContactPoint			Count ContactPoint
defaultValueDistance defaultValueCount			Distance Count
defaultValueDuration defaultValueDistance			Duration Distance
defaultValueHumanName defaultValueDuration			HumanName Duration
defaultValueIdentifier defaultValueHumanName			Identifier HumanName
defaultValueMoney defaultValueIdentifier			Money Identifier
defaultValuePeriod defaultValueMoney			Period Money
defaultValueQuantity defaultValuePeriod			Quantity Period
defaultValueRange defaultValueQuantity			Range Quantity
defaultValueRatio defaultValueRange			Ratio Range
defaultValueRatioRange defaultValueRatio			RatioRange Ratio
defaultValueReference defaultValueRatioRange			Reference RatioRange (Any)
defaultValueSampledData defaultValueReference			SampledData Reference (Any)
defaultValueSignature defaultValueSampledData			Signature SampledData
defaultValueTiming defaultValueSignature			Timing Signature
defaultValueContactDetail defaultValueTiming			ContactDetail Timing
defaultValueContributor defaultValueContactDetail			Contributor ContactDetail
defaultValueDataRequirement			DataRequirement
defaultValueExpression			Expression
defaultValueParameterDefinition			ParameterDefinition
defaultValueRelatedArtifact			RelatedArtifact
defaultValueTriggerDefinition			TriggerDefinition
defaultValueUsageContext			UsageContext
defaultValueDosage defaultValueAvailability			Availability
defaultValueExtendedContactDetail			ExtendedContactDetail
defaultValueDosage			Dosage
defaultValueMeta			Meta
meaningWhenMissing	Σ I C	0..1	markdown	Implicit meaning when this element is missing
orderMeaning	Σ	0..1	string	What the order of the elements means
example	Σ	0..*	Element	Example value (as defined for type)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
label	Σ	1..1	string	Describes the purpose of this example
value[x]	Σ	1..1		Value of Example (one of allowed types)
valueBase64Binary			base64Binary
valueBoolean			boolean
valueCanonical			canonical (Any)
valueCode			code
valueCode valueDate			code date
valueDate valueDateTime			date dateTime
valueDateTime valueDecimal			dateTime decimal
valueDecimal valueId			decimal id
valueId valueInstant			id instant
valueInstant valueInteger			instant integer
valueInteger valueInteger64			integer integer64
valueMarkdown			markdown
valueOid			oid
valuePositiveInt			positiveInt
valueString			string
valueTime			time
valueUnsignedInt			unsignedInt
valueUri			uri
valueUrl			url
valueUuid			uuid
valueAddress			Address
valueAge			Age
valueAnnotation			Annotation
valueAttachment			Attachment
valueCodeableConcept			CodeableConcept
valueCodeableReference			CodeableReference
valueCoding			Coding
valueContactPoint			ContactPoint
valueCount			Count
valueDistance			Distance
valueDuration			Duration
valueHumanName			HumanName
valueIdentifier			Identifier
valueMoney			Money
valuePeriod			Period
valueQuantity			Quantity
valueRange			Range
valueRatio			Ratio
valueRatioRange			RatioRange
valueReference			Reference (Any)
valueSampledData			SampledData
valueSignature			Signature
valueTiming			Timing
valueContactDetail			ContactDetail
valueContributor valueDataRequirement			Contributor DataRequirement
valueDataRequirement valueExpression			DataRequirement Expression
valueExpression valueParameterDefinition			Expression ParameterDefinition
valueParameterDefinition valueRelatedArtifact			ParameterDefinition RelatedArtifact
valueRelatedArtifact valueTriggerDefinition			RelatedArtifact TriggerDefinition
valueTriggerDefinition valueUsageContext			TriggerDefinition UsageContext
valueUsageContext valueAvailability			UsageContext Availability
valueDosage valueExtendedContactDetail			ExtendedContactDetail
valueDosage			Dosage
valueMeta			Meta
minValue[x]	Σ	0..1		Minimum Allowed Value (for some types)
minValueDate			date
minValueDateTime			dateTime
minValueInstant			instant
minValueTime			time
minValueDecimal			decimal
minValueInteger			integer
minValuePositiveInt minValueInteger64			positiveInt integer64
minValueUnsignedInt minValuePositiveInt			positiveInt
minValueUnsignedInt			unsignedInt
minValueQuantity			Quantity
maxValue[x]	Σ	0..1		Maximum Allowed Value (for some types)
maxValueDate			date
maxValueDateTime			dateTime
maxValueDateTime maxValueInstant			dateTime instant
maxValueInstant maxValueTime			instant time
maxValueTime maxValueDecimal			time decimal
maxValueDecimal maxValueInteger			decimal integer
maxValueInteger maxValueInteger64			integer integer64
maxValuePositiveInt			positiveInt
maxValueUnsignedInt			unsignedInt
maxValueQuantity			Quantity
maxLength	Σ	0..1	integer	Max length for strings string type data
condition	Σ	0..*	id	Reference to invariant about presence
constraint	Σ I C	0..*	Element	Condition that must evaluate to true
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
key	Σ I C	1..1	id	Target of 'condition' reference above
requirements	Σ	0..1	string markdown	Why this constraint is necessary or appropriate
severity	Σ	1..1	code	error | warning Binding: ConstraintSeverity ( required )
human suppress	Σ	1..1 0..1	string boolean	Human description of constraint Suppress warning or hint in profile
expression human	Σ	0..1 1..1	string	FHIRPath expression Human description of constraint
xpath expression	Σ	0..1	string	XPath FHIRPath expression of constraint
source	Σ	0..1	canonical ( StructureDefinition )	Reference to original source of constraint
mustHaveValue	Σ TU	0..1	boolean	For primitives, that a value must be present - not replaced by an extension
valueAlternatives	Σ TU	0..*	canonical ( StructureDefinition )	Extensions that are allowed to replace a primitive value
mustSupport	Σ	0..1	boolean	If the element must be supported (discouraged - see obligations)
obligation	Σ TU	0..*	Element	Documents obligations for applications making use of this element
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
code	Σ TU	1..1	Coding	Combination code describing the nature of the obligation Binding: Obligation Codes ValueSet ( extensible )
actor	Σ TU	0..*	canonical ( ActorDefinition )	Actor(s) this obligation applies to (all actors if none)
documentation	Σ TU	0..1	markdown	Documentation of the purpose or application of the obligation
usage	Σ TU	0..*	UsageContext	Qualifies the usage - jurisdiction, gender, workflow status etc
filter	Σ TU	0..1	string	Limits obligation to some repeats by FHIRPath
filterDocumentation	Σ TU	0..1	string	Ddescribes the intent of the filter (short)
process	Σ TU	0..*	uri	The obligation only applies when perfomring the indicated process
isModifierReason	Σ	0..1	string	Reason that this element is marked as a modifier
binding	Σ I C	0..1	Element	ValueSet details if this is coded
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
strength	Σ	1..1	code	required | extensible | preferred | example Binding: BindingStrength ( required )
description	Σ	0..1	string markdown	Human explanation Intended use of codes in the bound value set
valueSet	Σ I C	0..1	canonical ( ValueSet )	Source of value set
mapping additional	Σ TU	0..*	Element	Additional Bindings - more rules about the binding
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
purpose	Σ TU	1..1	code	maximum | minimum | required | extensible | candidate | current | preferred | ui | starter | component Binding: Additional Binding Purpose ValueSet ( required )
valueSet	Σ TU	1..1	canonical ( ValueSet )	The value set for the additional binding
documentation	Σ TU	0..1	markdown	Documentation of the purpose of use of the binding
shortDoco	Σ TU	0..1	string	Concise documentation - for summary tables
usage	Σ TU	0..*	UsageContext	Qualifies the usage - jurisdiction, gender, workflow status etc
any	Σ TU	0..1	boolean	Whether binding can applies to all repeats, or just one
mapping	Σ	0..*	Element	Map element to another set of definitions
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
identity	Σ	1..1	id	Reference to mapping declaration
language	Σ	0..1	code	Computable language of mapping Binding: MimeType Mime Types ( required ): BCP 13 (RFCs 2045, 2046, 2047, 4288, 4289 and 2049)
map	Σ	1..1	string	Details of the mapping
comment	Σ	0..1	string markdown	Comments about the mapping or its use
Documentation for this format