description: Describes the intended purpose of the rendered text. For example - instructions, guidance on access control, maintenance information, etc. package_name: hl7.fhir.r4b.core derivation: constraint name: displayCategory type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/questionnaire-displayCategory'} index: 1 value: choices: [valueCodeableConcept] index: 3 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4} package_version: 4.3.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/questionnaire-displayCategory base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.3.0 required: [value, valueCodeableConcept]