description: This cross-version extension represents AuditEvent.participant.userId from http://hl7.org/fhir/StructureDefinition/AuditEvent|1.0.2 for use in FHIR R5. package_name: hl7.fhir.uv.xver-r2.r5 derivation: constraint name: ext_R2_AuditEvent_pa_userId type: Extension elements: value: base: {path: 'Extension.value[x]'} short: Unique identifier for the user choices: [valueIdentifier] index: 1 valueIdentifier: base: {path: 'Extension.value[x]'} type: Identifier short: Unique identifier for the user choiceOf: value index: 2 url: pattern: {type: Uri, value: 'http://hl7.org/fhir/1.0/StructureDefinition/extension-AuditEvent.participant.userId'} index: 3 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/1.0/StructureDefinition/extension-AuditEvent.participant.userId base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]