description: A Study Instance ID, which may be used when the Entity type is not (110180, DCM, \"Study Instance UID\"). package_name: hl7.fhir.r5.examples derivation: constraint name: ParticipantObjectContainsStudy type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/auditevent-ParticipantObjectContainsStudy'} index: 1 value: choices: [valueIdentifier] index: 3 valueIdentifier: {type: Identifier, choiceOf: value, index: 4} package_version: 4.5.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/auditevent-ParticipantObjectContainsStudy base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.5.0 required: [valueIdentifier, value]