description: Indicates whether the child items of a group or question item is displayed in collapsible form. package_name: hl7.fhir.uv.sdc.r4b derivation: constraint name: CollapsibleExtension type: Extension elements: url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-collapsible'} index: 0 value: choices: [valueCode] index: 2 valueCode: {type: code, choiceOf: value, index: 3} package_version: 3.0.0 class: extension kind: complex-type url: http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-collapsible base: http://hl7.org/fhir/StructureDefinition/Extension version: 3.0.0