description: This cross-version extension represents ImplementationGuide.definition.parameter.code from http://hl7.org/fhir/StructureDefinition/ImplementationGuide|4.0.1 for use in FHIR R5. package_name: hl7.fhir.uv.xver derivation: constraint name: Ext_R4_ImplementationGuide_de_pa_code type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/4.0/StructureDefinition/extension-ImplementationGuide.definition.parameter.code'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: apply | path-resource | path-pages | path-tx-cache | expansion-parameter | rule-broken-links | generate-xml | generate-json | generate-turtle | html-template choices: [valueCode] index: 2 valueCode: base: {max: '1', min: 0, path: 'Extension.value[x]'} type: code short: apply | path-resource | path-pages | path-tx-cache | expansion-parameter | rule-broken-links | generate-xml | generate-json | generate-turtle | html-template choiceOf: value index: 3 package_version: r4.r5-0.0.1-snapshot-2 class: extension kind: complex-type url: http://hl7.org/fhir/4.0/StructureDefinition/extension-ImplementationGuide.definition.parameter.code base: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0 version: 0.0.1-snapshot-2 required: [url]