description: Records the existence of a past episode of metastatic cancer, for the purpose of long term management and tracking. package_name: globalalliant.us.eom-updates derivation: constraint name: HistoryOfMetastaticCancer type: Observation elements: code: binding: {strength: extensible, valueSet: 'http://hl7.org/fhir/us/mcode/ValueSet/mcode-history-of-metastatic-malignant-neoplasm-vs'} index: 0 value: isModifier: true mustSupport: true isModifierReason: When value is false, the resource semantics are reversed and the resource represents an assertion of NO history of metastatic cancer (either absolutely, or of the type indicated by Observation.code) choices: [valueBoolean] index: 2 valueBoolean: {type: boolean, isModifier: true, mustSupport: true, isModifierReason: 'When value is false, the resource semantics are reversed and the resource represents an assertion of NO history of metastatic cancer (either absolutely, or of the type indicated by Observation.code)', choiceOf: value, index: 3} package_version: 1.1.0-alpha-1 class: profile kind: resource url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-history-of-metastatic-cancer base: http://hl7.org/fhir/StructureDefinition/Observation version: 3.0.0