description: This cross-version extension represents ClaimResponse.error.expression from http://hl7.org/fhir/StructureDefinition/ClaimResponse|5.0.0 for use in FHIR R4B. package_name: hl7.fhir.uv.xver derivation: constraint name: ext_R5_ClaimResponse_er_expression type: Extension elements: value: base: {path: 'Extension.value[x]'} short: FHIRPath of element(s) related to issue choices: [valueString] index: 1 valueString: base: {path: 'Extension.value[x]'} type: string short: FHIRPath of element(s) related to issue choiceOf: value index: 2 url: pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-ClaimResponse.error.expression'} index: 3 package_version: r5.r4b-0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/5.0/StructureDefinition/extension-ClaimResponse.error.expression base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]