description: This flag is true if the dose is the primary plan dose in a radiotherapy treatment plan.\nFor a single treatment plan, the primary plan dose serves as the main dose value for tracking delivered dose vs. planned dose.\nIn summaries over multiple treatment plans, the flag indicates that the dose is a primary plan dose in any of the summarized plans. package_name: hl7.fhir.us.codex derivation: constraint name: PrimaryPlanDose type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-primary-plan-dose'} index: 1 value: short: Primary Plan Dose choices: [valueBoolean] index: 3 valueBoolean: {type: boolean, short: Primary Plan Dose, choiceOf: value, index: 4} package_version: radiation-therapy-1.0.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-primary-plan-dose base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0