description: Parent profile for observations regarding cancer stage, grade, or classification. The stage is an assessment of the extent of the cancer in the body, according to a given cancer staging classification system. Profiles for different staging systems (e.g., TNM stage group, Rai stage, FIGO stage, etc.) must derive from this profile.\n\nDespite its name, the CancerStage profile can also be used as a parent for cancer grade or classification. This is because the structure of the profiles are the same or very similar. The key elements are the code, method, value, and optionally, prognostic factors referenced in the hasMember element. package_name: hl7.fhir.us.mcode derivation: constraint name: CancerStage abstract: true type: Observation elements: referenceRange: {short: Not used in this profile, index: 11} hasMember: {short: Prognostic factors contributing to stage determination., index: 12} method: short: The staging system used. binding: {strength: extensible, valueSet: 'http://hl7.org/fhir/us/mcode/ValueSet/mcode-cancer-staging-method-vs'} mustSupport: true index: 9 value: short: The value of the stage mustSupport: true choices: [valueCodeableConcept] index: 7 status: {mustSupport: true, index: 0} effective: mustSupport: true choices: [] index: 5 code: short: The type of stage information reported. binding: {strength: preferred, valueSet: 'http://hl7.org/fhir/us/mcode/ValueSet/mcode-cancer-stage-type-vs'} mustSupport: true index: 1 valueCodeableConcept: {type: CodeableConcept, short: The value of the stage, mustSupport: true, choiceOf: value, index: 8} focus: type: Reference short: The cancer condition associated with staging assessment. mustSupport: true refers: ['http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-primary-cancer-condition'] index: 3 device: {short: Not used in this profile, index: 10} subject: type: Reference mustSupport: true refers: ['http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-cancer-patient'] index: 2 package_version: 4.0.0-ballot class: profile kind: resource url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-cancer-stage base: http://hl7.org/fhir/StructureDefinition/Observation version: 4.0.0-ballot