description: This cross-version extension represents ResearchSubject.status from http://hl7.org/fhir/StructureDefinition/ResearchSubject|4.0.1 for use in FHIR R5. package_name: hl7.fhir.uv.xver-r4.r5 derivation: constraint name: ext_R4_ResearchSubject_status type: Extension elements: value: base: {path: 'Extension.value[x]'} short: candidate | eligible | follow-up | ineligible | not-registered | off-study | on-study | on-study-intervention | on-study-observation | pending-on-study | potential-candidate | screening | withdrawn choices: [valueCode] index: 1 valueCode: base: {path: 'Extension.value[x]'} type: code short: candidate | eligible | follow-up | ineligible | not-registered | off-study | on-study | on-study-intervention | on-study-observation | pending-on-study | potential-candidate | screening | withdrawn choiceOf: value index: 2 url: pattern: {type: uri, value: 'http://hl7.org/fhir/4.0/StructureDefinition/extension-ResearchSubject.status'} type: uri index: 3 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/4.0/StructureDefinition/extension-ResearchSubject.status base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]