description: A summary of a phase of brachytherapy treatment that has been delivered. The scope is a treatment consisting of one or multiple identical fractions. A phase ends when there is a change in the irradiated volume, treatment fraction size, modality, or treatment technique. package_name: hl7.fhir.us.mcode derivation: constraint name: BrachytherapyTreatmentPhase type: Procedure elements: extension: mustSupport: true index: 0 slicing: rules: open ordered: false discriminator: - {path: url, type: value} min: null slices: modality: match: {url: null} schema: short: Brachytherapy Modality type: Extension mustSupport: true url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-modality index: 1 elements: value: choices: [] index: 3 technique: match: {url: null} schema: short: Brachytherapy Technique type: Extension mustSupport: true url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-technique index: 4 elements: value: choices: [] index: 6 fractionsDelivered: match: {url: null} schema: {short: Number of Fractions Delivered, type: Extension, mustSupport: true, url: 'http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-fractions-delivered', index: 7} min: 0 max: 1 doseDeliveredToVolume: match: {url: null} schema: type: Extension mustSupport: true url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-dose-delivered-to-volume index: 8 extensions: fractionsDelivered: {url: null, max: 0, short: Not used in this profile., index: 9} elements: extension: short: Not used in this profile. index: 9 slicing: slices: fractionsDelivered: match: {} schema: {short: Not used in this profile., index: 9} max: 0 partOf: type: Reference refers: ['http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-course-summary'] index: 10 category: mustSupport: true pattern: type: CodeableConcept value: coding: - {code: '108290001', system: 'http://snomed.info/sct'} index: 11 code: pattern: type: CodeableConcept value: coding: - {code: mcode-brachytherapy-treatment-phase, system: 'http://hl7.org/fhir/us/mcode/CodeSystem/mcode-resource-identifier-cs'} index: 12 performed: choices: [performedPeriod] index: 14 performedPeriod: {type: Period, choiceOf: performed, index: 15} bodySite: short: All body structure(s) treated in this phase binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/mcode/ValueSet/mcode-radiotherapy-treatment-location-vs'} index: 16 package_version: 1.16.0 extensions: modality: url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-modality short: Brachytherapy Modality type: Extension mustSupport: true index: 1 elements: value: choices: [] index: 3 technique: url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-technique short: Brachytherapy Technique type: Extension mustSupport: true index: 4 elements: value: choices: [] index: 6 fractionsDelivered: {url: 'http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-fractions-delivered', min: 0, max: 1, short: Number of Fractions Delivered, type: Extension, mustSupport: true, index: 7} doseDeliveredToVolume: url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-radiotherapy-dose-delivered-to-volume type: Extension mustSupport: true index: 8 extensions: fractionsDelivered: {url: null, max: 0, short: Not used in this profile., index: 9} elements: extension: short: Not used in this profile. index: 9 slicing: slices: fractionsDelivered: match: {} schema: {short: Not used in this profile., index: 9} max: 0 class: profile kind: resource url: http://hl7.org/fhir/us/mcode/StructureDefinition/mcode-brachytherapy-treatment-phase base: http://hl7.org/fhir/us/core/StructureDefinition/us-core-procedure version: 1.16.0 required: [category]