Release 4

This page is part of the FHIR Specification (v4.0.1: R4 - Mixed Normative and STU) in it's permanent home (it will always be available at this URL). 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: R4B R4

Extension: constraint

FHIR Infrastructure Work Group Maturity Level: 1 Informative Use Context: Any

URL for this extension:

http://hl7.org/fhir/StructureDefinition/questionnaire-constraint

Status: draft. Extension maintained by: HL7

An invariant that must be satisfied before responses to the questionnaire can be considered "complete".

Comment:

This maps to the ElementDefinition.constraint element.

Context of Use: Use on Element ID Questionnaire, Element ID Questionnaire.item or Element ID Questionnaire.item.item

Summary

Name	Flags	Card.	Type
.. constraint	0..*	Extension	URL = http://hl7.org/fhir/StructureDefinition/questionnaire-constraint constraint: An invariant that must be satisfied before responses to the questionnaire can be considered "complete". Use on Element ID Questionnaire, Element ID Questionnaire.item or Element ID Questionnaire.item.item
... key	1..1	id	Unique id for the constraint within the questionnaire.
... requirements	0..1	string	An explanation of why this extension is required (for documentation purposes).
... severity	1..1	code	Indicates how serious violating the invariant is.
... expression	1..1	string	The FHIRPath expression of the rule for computable interpretation.
... human	1..1	string	A free text expression of the rule to display to the user if the rule is violated.
... location	0..*	string	Relative paths to the questions this rule is enforced against.
doco Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints doco
.. extension	0..*	Extension	URL = http://hl7.org/fhir/StructureDefinition/questionnaire-constraint constraint: An invariant that must be satisfied before responses to the questionnaire can be considered "complete". Use on Element ID Questionnaire, Element ID Questionnaire.item or Element ID Questionnaire.item.item
... extension	I	0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
... extension:key	I	1..1	Extension	Unique identifier
.... extension	I	0..0
.... url	1..1	uri	"key"
.... value[x]	I	1..1	id	Value of extension
... extension:requirements	I	0..1	Extension	Why needed
.... extension	I	0..0
.... url	1..1	uri	"requirements"
.... value[x]	I	1..1	string	Value of extension
... extension:severity	I	1..1	Extension	error\|warning
.... extension	I	0..0
.... url	1..1	uri	"severity"
.... value[x]	I	1..1	code	Value of extension Binding: ConstraintSeverity (required)
... extension:expression	I	1..1	Extension	Formal rule
.... extension	I	0..0
.... url	1..1	uri	"expression"
.... value[x]	I	1..1	string	Value of extension
... extension:human	I	1..1	Extension	Human-readable rule
.... extension	I	0..0
.... url	1..1	uri	"human"
.... value[x]	I	1..1	string	Value of extension
... extension:location	I	0..*	Extension	Relative path to elements
.... extension	I	0..0
.... url	1..1	uri	"location"
.... value[x]	I	1..1	string	Value of extension
... url	1..1	uri	"http://hl7.org/fhir/StructureDefinition/questionnaire-constraint"
... value[x]	I	0..0
.... valueBase64Binary	base64Binary
.... valueBoolean	boolean
.... valueCanonical	canonical()
.... valueCode	code
.... valueDate	date
.... valueDateTime	dateTime
.... valueDecimal	decimal
.... valueId	id
.... valueInstant	instant
.... valueInteger	integer
.... 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
.... valueCoding	Coding
.... valueContactPoint	ContactPoint
.... valueCount	Count
.... valueDistance	Distance
.... valueDuration	Duration
.... valueHumanName	HumanName
.... valueIdentifier	Identifier
.... valueMoney	Money
.... valuePeriod	Period
.... valueQuantity	Quantity
.... valueRange	Range
.... valueRatio	Ratio
.... valueReference	Reference()
.... valueSampledData	SampledData
.... valueSignature	Signature
.... valueTiming	Timing
.... valueContactDetail	ContactDetail
.... valueContributor	Contributor
.... valueDataRequirement	DataRequirement
.... valueExpression	Expression
.... valueParameterDefinition	ParameterDefinition
.... valueRelatedArtifact	RelatedArtifact
.... valueTriggerDefinition	TriggerDefinition
.... valueUsageContext	UsageContext
.... valueDosage	Dosage
.... valueMeta	Meta
doco Documentation for this format

XML Template

<!-- constraint -->doco 
<extension xmlns="http://hl7.org/fhir"
 url="http://hl7.org/fhir/StructureDefinition/questionnaire-constraint" >
 <-- extension sliced by value:url in the specified orderOpen-->
 <extension url="key"> ?? 1..1 Extension  <!-- ?? 1..1 Unique identifier -->
 <valueId value="[id ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
 <extension url="requirements"> ?? 0..1 Extension  <!-- ?? 0..1 Why needed -->
 <valueString value="[string ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
 <extension url="severity"> ?? 1..1 Extension  <!-- ?? 1..1 error|warning -->
 <valueCode value="[code ]"/><!-- ?? 1..1 Value of extension  -->
 </extension>
 <extension url="expression"> ?? 1..1 Extension  <!-- ?? 1..1 Formal rule -->
 <valueString value="[string ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
 <extension url="human"> ?? 1..1 Extension  <!-- ?? 1..1 Human-readable rule -->
 <valueString value="[string ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
 <extension url="location"> ?? 0..* Extension  <!-- ?? 0..* Relative path to elements -->
 <valueString value="[string ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
</extension>

JSON Template

{ // constraint
 "extension" : [ //  sliced by value:url in the specified order, Open 
 { // Unique identifier // C? R! 
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "key", // R! 
 "valueId" : "<id >" // C? R! Value of extension
 },
 { // Why needed // C?
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "requirements", // R! 
 "valueString" : "<string >" // C? R! Value of extension
 },
 { // error|warning // C? R! 
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "severity", // R! 
 "valueCode" : "<code >" // C? R! Value of extension 
 },
 { // Formal rule // C? R! 
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "expression", // R! 
 "valueString" : "<string >" // C? R! Value of extension
 },
 { // Human-readable rule // C? R! 
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "human", // R! 
 "valueString" : "<string >" // C? R! Value of extension
 },
 { // Relative path to elements // C?
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "location", // R! 
 "valueString" : "<string >" // C? R! Value of extension
 }
 ],
 "url" : "http://hl7.org/fhir/StructureDefinition/questionnaire-constraint", // R! 
// value[x]: Value of extension. One of these 50:
 }

Summary

Name	Flags	Card.	Type
.. constraint	0..*	Extension	URL = http://hl7.org/fhir/StructureDefinition/questionnaire-constraint constraint: An invariant that must be satisfied before responses to the questionnaire can be considered "complete". Use on Element ID Questionnaire, Element ID Questionnaire.item or Element ID Questionnaire.item.item
... key	1..1	id	Unique id for the constraint within the questionnaire.
... requirements	0..1	string	An explanation of why this extension is required (for documentation purposes).
... severity	1..1	code	Indicates how serious violating the invariant is.
... expression	1..1	string	The FHIRPath expression of the rule for computable interpretation.
... human	1..1	string	A free text expression of the rule to display to the user if the rule is violated.
... location	0..*	string	Relative paths to the questions this rule is enforced against.
doco Documentation for this format

Full Structure

Name	Flags	Card.	Type	Description & Constraints doco
.. extension	0..*	Extension	URL = http://hl7.org/fhir/StructureDefinition/questionnaire-constraint constraint: An invariant that must be satisfied before responses to the questionnaire can be considered "complete". Use on Element ID Questionnaire, Element ID Questionnaire.item or Element ID Questionnaire.item.item
... extension	I	0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
... extension:key	I	1..1	Extension	Unique identifier
.... extension	I	0..0
.... url	1..1	uri	"key"
.... value[x]	I	1..1	id	Value of extension
... extension:requirements	I	0..1	Extension	Why needed
.... extension	I	0..0
.... url	1..1	uri	"requirements"
.... value[x]	I	1..1	string	Value of extension
... extension:severity	I	1..1	Extension	error\|warning
.... extension	I	0..0
.... url	1..1	uri	"severity"
.... value[x]	I	1..1	code	Value of extension Binding: ConstraintSeverity (required)
... extension:expression	I	1..1	Extension	Formal rule
.... extension	I	0..0
.... url	1..1	uri	"expression"
.... value[x]	I	1..1	string	Value of extension
... extension:human	I	1..1	Extension	Human-readable rule
.... extension	I	0..0
.... url	1..1	uri	"human"
.... value[x]	I	1..1	string	Value of extension
... extension:location	I	0..*	Extension	Relative path to elements
.... extension	I	0..0
.... url	1..1	uri	"location"
.... value[x]	I	1..1	string	Value of extension
... url	1..1	uri	"http://hl7.org/fhir/StructureDefinition/questionnaire-constraint"
... value[x]	I	0..0
.... valueBase64Binary	base64Binary
.... valueBoolean	boolean
.... valueCanonical	canonical()
.... valueCode	code
.... valueDate	date
.... valueDateTime	dateTime
.... valueDecimal	decimal
.... valueId	id
.... valueInstant	instant
.... valueInteger	integer
.... 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
.... valueCoding	Coding
.... valueContactPoint	ContactPoint
.... valueCount	Count
.... valueDistance	Distance
.... valueDuration	Duration
.... valueHumanName	HumanName
.... valueIdentifier	Identifier
.... valueMoney	Money
.... valuePeriod	Period
.... valueQuantity	Quantity
.... valueRange	Range
.... valueRatio	Ratio
.... valueReference	Reference()
.... valueSampledData	SampledData
.... valueSignature	Signature
.... valueTiming	Timing
.... valueContactDetail	ContactDetail
.... valueContributor	Contributor
.... valueDataRequirement	DataRequirement
.... valueExpression	Expression
.... valueParameterDefinition	ParameterDefinition
.... valueRelatedArtifact	RelatedArtifact
.... valueTriggerDefinition	TriggerDefinition
.... valueUsageContext	UsageContext
.... valueDosage	Dosage
.... valueMeta	Meta
doco Documentation for this format

XML Template

<!-- constraint -->doco 
<extension xmlns="http://hl7.org/fhir"
 url="http://hl7.org/fhir/StructureDefinition/questionnaire-constraint" >
 <-- extension sliced by value:url in the specified orderOpen-->
 <extension url="key"> ?? 1..1 Extension  <!-- ?? 1..1 Unique identifier -->
 <valueId value="[id ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
 <extension url="requirements"> ?? 0..1 Extension  <!-- ?? 0..1 Why needed -->
 <valueString value="[string ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
 <extension url="severity"> ?? 1..1 Extension  <!-- ?? 1..1 error|warning -->
 <valueCode value="[code ]"/><!-- ?? 1..1 Value of extension  -->
 </extension>
 <extension url="expression"> ?? 1..1 Extension  <!-- ?? 1..1 Formal rule -->
 <valueString value="[string ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
 <extension url="human"> ?? 1..1 Extension  <!-- ?? 1..1 Human-readable rule -->
 <valueString value="[string ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
 <extension url="location"> ?? 0..* Extension  <!-- ?? 0..* Relative path to elements -->
 <valueString value="[string ]"/><!-- ?? 1..1 Value of extension -->
 </extension>
</extension>

JSON Template

{ // constraint
 "extension" : [ //  sliced by value:url in the specified order, Open 
 { // Unique identifier // C? R! 
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "key", // R! 
 "valueId" : "<id >" // C? R! Value of extension
 },
 { // Why needed // C?
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "requirements", // R! 
 "valueString" : "<string >" // C? R! Value of extension
 },
 { // error|warning // C? R! 
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "severity", // R! 
 "valueCode" : "<code >" // C? R! Value of extension 
 },
 { // Formal rule // C? R! 
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "expression", // R! 
 "valueString" : "<string >" // C? R! Value of extension
 },
 { // Human-readable rule // C? R! 
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "human", // R! 
 "valueString" : "<string >" // C? R! Value of extension
 },
 { // Relative path to elements // C?
 // from Element: extension
 "extension" : [ //  sliced by value:url in the specified order, Open ]
 "url" : "location", // R! 
 "valueString" : "<string >" // C? R! Value of extension
 }
 ],
 "url" : "http://hl7.org/fhir/StructureDefinition/questionnaire-constraint", // R! 
// value[x]: Value of extension. One of these 50:
 }

Constraints

ele-1: All FHIR elements must have a @value or children (xpath: @value|f:*|h:div)
ext-1: Must have either extensions or value[x], not both (xpath: exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')]))
ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.extension.value[x]: @value|f:*|h:div)
ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.extension.value[x]: @value|f:*|h:div)
ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.extension.value[x]: @value|f:*|h:div)
ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.extension.value[x]: @value|f:*|h:div)
ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.extension.value[x]: @value|f:*|h:div)
ele-1: On Extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.extension: All FHIR elements must have a @value or children (xpath on Extension.extension.extension: @value|f:*|h:div)
ext-1: On Extension.extension.extension: Must have either extensions or value[x], not both (xpath on Extension.extension.extension: exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")]))
ele-1: On Extension.extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.extension.value[x]: @value|f:*|h:div)
ele-1: On Extension.value[x]: All FHIR elements must have a @value or children (xpath on Extension.value[x]: @value|f:*|h:div)