FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.1.0-cibuild 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
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 | Conf. | Type | Context | WG | Status | Δ v1.0.0 |
(See also Extensions defined on BackboneType |
| 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 |
| cqf-shouldTraceDependency | 0..1 | boolean | StructureDefinition, ElementDefinition | cds | Trial-Use: FMM1 |  Added |
| 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 | fhir | Trial-Use: FMM3 | n/c |
| elementdefinition-bestpractice-explanation | 0..1 | markdown | ElementDefinition.constraint | 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 | Trial-Use: 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 | Trial-Use: FMM3 | n/c |
| elementdefinition-minValueSet | 0..1 | (Choice) | ElementDefinition.binding | fhir | Trial-Use: FMM3 | 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 | Trial-Use: FMM3 | n/c |
| elementdefinition-suppress | 0..1 | boolean | ElementDefinition.comment, ElementDefinition.requirements, ElementDefinition.alias,
ElementDefinition.example, ElementDefinition.mapping, ElementDefinition.label,
ElementDefinition.code | fhir | Draft: FMM1 | n/c |
| 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 | integer | 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 |
| obligation | 0..* | (complex) | ElementDefinition, StructureDefinition, ElementDefinition.type | fhir | Draft: FMM1 |  Changed |
| questionnaire-baseType | 0..1 | code | Questionnaire.item, ElementDefinition | fhir | Trial-Use: FMM3 | n/c |
| questionnaire-constraint | 0..* | (complex) | Questionnaire, 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-signatureRequired | 0..* | CodeableConcept | Questionnaire, Questionnaire.item, ElementDefinition | fhir | Trial-Use: FMM3 | n/c |
| questionnaire-supportLink | 0..* | uri | Questionnaire.item, ElementDefinition | fhir | Trial-Use: FMM3 | n/c |
| questionnaire-usageMode | 0..1 | code | Questionnaire.item, ElementDefinition | fhir | Trial-Use: FMM3 | 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 | n/c |
| 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, CodeSystem.concept, StructureDefinition.context,
SearchParameter.base, ElementDefinition, ElementDefinition.type,
ElementDefinition.targetProfile, OperationDefinition.parameter,
OperationDefinition.parameter.type, OperationDefinition.parameter.allowedType,
OperationDefinition.parameter.targetProfile, ImplementationGuide.definition.page | fhir | Trial-Use: FMM3 | n/c |
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