FHIR Extensions Pack v5.4.0 (2026-10-09)

FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.4.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions

ElementDefinition Detail - Extensions

FHIR Infrastructure Work GroupMaturity Level: N/AStandards Status: InformativeSecurity Category: N/A Compartments: N/A

This table lists extensions for the ElementDefinition data type defined in association with the core specification. For background information, see Extensibility. Additional extensions may be found in published Implementation Guides and in the Conformance resource registry .

Identity Card. Type Context WG Status Δ v5.3.0
Extensions defined for the ElementDefinition data type
11179-objectClass 0..1 Coding ElementDefinition.mapping fhir Trial-Use : FMM3 n/c
11179-objectClassProperty 0..1 Coding ElementDefinition.mapping fhir Trial-Use : FMM3 n/c
contentReferenceProfile 0..1 uri ElementDefinition fhir Draft : FMM0 Added
cqf-shouldTraceDependency 0..1 boolean StructureDefinition , ElementDefinition cds Trial-Use : FMM1 n/c
designNote 0..1 markdown Questionnaire , Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
elementdefinition-allowedUnits 0..1 (Choice) ElementDefinition fhir Trial-Use : FMM3 n/c
elementdefinition-bestpractice 0..1 (Choice) ElementDefinition.constraint , http://hl7.org/fhir/StructureDefinition/targetConstraint fhir Trial-Use : FMM3 n/c
elementdefinition-bestpractice-explanation 0..1 markdown ElementDefinition.constraint , http://hl7.org/fhir/StructureDefinition/targetConstraint fhir Trial-Use : FMM3 n/c
elementdefinition-bindingName 0..1 string ElementDefinition.binding , OperationDefinition.parameter.binding fhir Trial-Use : FMM3 n/c
elementdefinition-defaulttype 0..1 canonical ElementDefinition fhir Trial-Use : FMM2 n/c
elementdefinition-equivalence 0..1 code ElementDefinition.mapping fhir Trial-Use : FMM3 n/c
elementdefinition-graphConstraint 0..1 canonical ElementDefinition.type.targetProfile fhir Trial-Use : FMM2 n/c
elementdefinition-identifier 0..* Identifier ElementDefinition fhir Deprecated : FMM3 n/c
elementdefinition-inheritedExtensibleValueSet 0..* (Choice) ElementDefinition.binding fhir Trial-Use : FMM3 n/c
elementdefinition-isCommonBinding 0..1 boolean ElementDefinition.binding fhir Trial-Use : FMM3 n/c
elementdefinition-maxValueSet 0..1 (Choice) ElementDefinition.binding fhir Deprecated : FMM3 n/c
elementdefinition-minValueSet 0..1 (Choice) ElementDefinition.binding fhir Deprecated : FMM3 n/c
elementdefinition-namespace 0..1 uri ElementDefinition , StructureDefinition fhir Deprecated : FMM1 n/c
elementdefinition-pattern 0..1 canonical ElementDefinition.type fhir Trial-Use : FMM2 n/c
elementdefinition-profile-element 0..1 string ElementDefinition.type.profile fhir Trial-Use : FMM3 n/c
elementdefinition-question 0..* string ElementDefinition fhir Trial-Use : FMM3 n/c
elementdefinition-selector 0..1 string ElementDefinition fhir Deprecated : FMM3 n/c
elementdefinition-suppress 0..1 boolean ElementDefinition.comment , ElementDefinition.requirements , ElementDefinition.alias ,
ElementDefinition.example , ElementDefinition.mapping , ElementDefinition.label ,
ElementDefinition.code 		fhir Trial-Use : FMM1 Changed (M)
elementdefinition-translatable 0..1 boolean ElementDefinition fhir Trial-Use : FMM3 n/c
elementdefinition-type-must-support 0..1 boolean ElementDefinition.type , ElementDefinition.type.profile , ElementDefinition.type.targetProfile fhir Trial-Use : FMM2 n/c
entryFormat 0..1 string Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
maxDecimalPlaces 0..1 (Choice) Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
maxSize 0..1 decimal Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
mimeType 0..* code Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
minLength 0..1 integer Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
narrative-source-control 0..1 code ElementDefinition fhir Trial-Use : FMM2 n/c
obligation 0..* (complex) ElementDefinition , StructureDefinition , ElementDefinition.type fhir Trial-Use : FMM1 Changed (D)
preferredTerminologyServer 0..* url Questionnaire , Questionnaire.item , ElementDefinition fhir Trial-Use : FMM4 n/c
preferredValueAlternatives 0..1 canonical ElementDefinition fhir Trial-Use : FMM1 n/c
questionnaire-baseType 0..1 code Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-choiceOrientation 0..1 code Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-constraint 0..* (complex) Questionnaire , Questionnaire.item , ElementDefinition fhir Deprecated : FMM3 n/c
questionnaire-displayCategory 0..1 CodeableConcept Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-hidden 0..1 boolean Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-itemControl 0..1 CodeableConcept Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-optionRestriction 0..* (Choice) Questionnaire.item , ElementDefinition fhir Trial-Use : FMM2 n/c
questionnaire-referenceFilter 0..1 string Questionnaire.item , ElementDefinition fhir Deprecated : FMM3 n/c
questionnaire-referenceProfile 0..* canonical Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-referenceResource 0..* code Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-signatureRequired 0..* CodeableConcept Questionnaire , Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-sliderStepValue 0..1 integer Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-supportLink 0..* uri Questionnaire.item , ElementDefinition fhir Deprecated : FMM3 n/c
questionnaire-unit 0..1 Coding Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-unitOption 0..* Coding Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-unitValueSet 0..1 canonical Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
questionnaire-usageMode 0..1 code Questionnaire.item , ElementDefinition fhir Trial-Use : FMM3 n/c
regex 0..1 string Questionnaire.item , ElementDefinition fhir Deprecated : FMM1 n/c
structuredefinition-display-hint 0..1 string ElementDefinition fhir Trial-Use : FMM3 n/c
structuredefinition-explicit-type-name 0..1 string ElementDefinition fhir Trial-Use : FMM3 n/c
structuredefinition-fhir-type 0..1 url ElementDefinition.type fhir Trial-Use : FMM3 Changed (D)
structuredefinition-hierarchy 0..1 boolean ElementDefinition.type fhir Trial-Use : FMM3 n/c
structuredefinition-normative-version 0..1 code CanonicalResource , ElementDefinition fhir Trial-Use : FMM3 n/c
structuredefinition-standards-status 0..1 code CanonicalResource , ValueSet.compose.include.concept , StructureDefinition.context ,
SearchParameter.base , ElementDefinition , ElementDefinition.type ,
ElementDefinition.type.targetProfile , OperationDefinition.parameter ,
OperationDefinition.parameter.type , OperationDefinition.parameter.allowedType ,
OperationDefinition.parameter.targetProfile , ImplementationGuide.definition.page 		fhir Trial-Use : FMM3 n/c

(See also Extensions defined on BackboneType )

61 Extensions