HL7 Europe Common Cancer Model
1.0.0-ballot - ballot 150

HL7 Europe Common Cancer Model - Local Development build (v1.0.0-ballot) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

## Logical Model: Radiotherapy

Official URL: http://hl7.eu/fhir/cancer-common/StructureDefinition/Radiotherapy | Version: 1.0.0-ballot
Active as of 2026-06-14 | Computable Name: Radiotherapy
Copyright/Legal: HL7 Europe Copyright. Licensed under Common Creative License (CC0 1.0). Details at Copyright.

Logical model representing a radiotherapy treatment course administered to the patient, including intent, timing, and anatomical target. Derived from Cancer_Common_Logical_Model_20260521.xlsx (sheet Radiotherapy).

Usages:

- This Logical Model is not used by any profiles in this Specification

You can also check for usages in the FHIR IG Statistics

### Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

- Key Elements Table
- Differential Table
- Snapshot Table
- Statistics/References
- All

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Radiotherapy | C | 0..* | Base | Radiotherapy Instances of this logical model can be the target of a Reference Constraints: rt-1
subject |  | 1..1 | Reference(Cancer Patient) | Subject
cancerConditionAtDiagnosisReference |  | 1..1 | Reference(CancerConditionAtDiagnosis) | CancerCondition AtDiagnosis Reference
clinicalCancerProgressionReference |  | 0..1 | Reference(ClinicalCancerProgression) | ClinicalCancerProgresionReference
intent |  | 1..1 | CodeableConcept | Intent
startDate |  | 1..1 | dateTime | StartDate
endDate |  | 0..1 | dateTime | EndDate
bodySite |  | 1..* | CodeableConcept | BodySite
setting |  | 0..1 | CodeableConcept | Setting
Documentation for this format

#### Constraints

Id | Grade | Path(s) | Description | Expression
rt-1 | warning | Radiotherapy | If endDate is present, it should be greater than or equal to startDate. | `endDate.empty() or endDate >= startDate`

This structure is derived from Base

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Radiotherapy | C | 0..* | Base | Radiotherapy Instances of this logical model can be the target of a Reference Constraints: rt-1
subject |  | 1..1 | Reference(Cancer Patient) | Subject
cancerConditionAtDiagnosisReference |  | 1..1 | Reference(CancerConditionAtDiagnosis) | CancerCondition AtDiagnosis Reference
clinicalCancerProgressionReference |  | 0..1 | Reference(ClinicalCancerProgression) | ClinicalCancerProgresionReference
intent |  | 1..1 | CodeableConcept | Intent
startDate |  | 1..1 | dateTime | StartDate
endDate |  | 0..1 | dateTime | EndDate
bodySite |  | 1..* | CodeableConcept | BodySite
setting |  | 0..1 | CodeableConcept | Setting
Documentation for this format

#### Constraints

Id | Grade | Path(s) | Description | Expression
rt-1 | warning | Radiotherapy | If endDate is present, it should be greater than or equal to startDate. | `endDate.empty() or endDate >= startDate`

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Radiotherapy | C | 0..* | Base | Radiotherapy Instances of this logical model can be the target of a Reference Constraints: rt-1
subject |  | 1..1 | Reference(Cancer Patient) | Subject
cancerConditionAtDiagnosisReference |  | 1..1 | Reference(CancerConditionAtDiagnosis) | CancerCondition AtDiagnosis Reference
clinicalCancerProgressionReference |  | 0..1 | Reference(ClinicalCancerProgression) | ClinicalCancerProgresionReference
intent |  | 1..1 | CodeableConcept | Intent
startDate |  | 1..1 | dateTime | StartDate
endDate |  | 0..1 | dateTime | EndDate
bodySite |  | 1..* | CodeableConcept | BodySite
setting |  | 0..1 | CodeableConcept | Setting
Documentation for this format

#### Constraints

Id | Grade | Path(s) | Description | Expression
rt-1 | warning | Radiotherapy | If endDate is present, it should be greater than or equal to startDate. | `endDate.empty() or endDate >= startDate`

This structure is derived from Base

Summary

Mandatory: 0 element(5 nested mandatory elements)

Structures

This structure refers to these other structures:

- Cancer Patient (http://hl7.eu/fhir/cancer-common/StructureDefinition/CancerPatient)
- CancerConditionAtDiagnosis (http://hl7.eu/fhir/cancer-common/StructureDefinition/CancerConditionAtDiagnosis)
- ClinicalCancerProgression (http://hl7.eu/fhir/cancer-common/StructureDefinition/ClinicalCancerProgression)

Key Elements View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Radiotherapy | C | 0..* | Base | Radiotherapy Instances of this logical model can be the target of a Reference Constraints: rt-1
subject |  | 1..1 | Reference(Cancer Patient) | Subject
cancerConditionAtDiagnosisReference |  | 1..1 | Reference(CancerConditionAtDiagnosis) | CancerCondition AtDiagnosis Reference
clinicalCancerProgressionReference |  | 0..1 | Reference(ClinicalCancerProgression) | ClinicalCancerProgresionReference
intent |  | 1..1 | CodeableConcept | Intent
startDate |  | 1..1 | dateTime | StartDate
endDate |  | 0..1 | dateTime | EndDate
bodySite |  | 1..* | CodeableConcept | BodySite
setting |  | 0..1 | CodeableConcept | Setting
Documentation for this format

#### Constraints

Id | Grade | Path(s) | Description | Expression
rt-1 | warning | Radiotherapy | If endDate is present, it should be greater than or equal to startDate. | `endDate.empty() or endDate >= startDate`

Differential View

This structure is derived from Base

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Radiotherapy | C | 0..* | Base | Radiotherapy Instances of this logical model can be the target of a Reference Constraints: rt-1
subject |  | 1..1 | Reference(Cancer Patient) | Subject
cancerConditionAtDiagnosisReference |  | 1..1 | Reference(CancerConditionAtDiagnosis) | CancerCondition AtDiagnosis Reference
clinicalCancerProgressionReference |  | 0..1 | Reference(ClinicalCancerProgression) | ClinicalCancerProgresionReference
intent |  | 1..1 | CodeableConcept | Intent
startDate |  | 1..1 | dateTime | StartDate
endDate |  | 0..1 | dateTime | EndDate
bodySite |  | 1..* | CodeableConcept | BodySite
setting |  | 0..1 | CodeableConcept | Setting
Documentation for this format

#### Constraints

Id | Grade | Path(s) | Description | Expression
rt-1 | warning | Radiotherapy | If endDate is present, it should be greater than or equal to startDate. | `endDate.empty() or endDate >= startDate`

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Radiotherapy | C | 0..* | Base | Radiotherapy Instances of this logical model can be the target of a Reference Constraints: rt-1
subject |  | 1..1 | Reference(Cancer Patient) | Subject
cancerConditionAtDiagnosisReference |  | 1..1 | Reference(CancerConditionAtDiagnosis) | CancerCondition AtDiagnosis Reference
clinicalCancerProgressionReference |  | 0..1 | Reference(ClinicalCancerProgression) | ClinicalCancerProgresionReference
intent |  | 1..1 | CodeableConcept | Intent
startDate |  | 1..1 | dateTime | StartDate
endDate |  | 0..1 | dateTime | EndDate
bodySite |  | 1..* | CodeableConcept | BodySite
setting |  | 0..1 | CodeableConcept | Setting
Documentation for this format

#### Constraints

Id | Grade | Path(s) | Description | Expression
rt-1 | warning | Radiotherapy | If endDate is present, it should be greater than or equal to startDate. | `endDate.empty() or endDate >= startDate`

This structure is derived from Base

Summary

Mandatory: 0 element(5 nested mandatory elements)

Structures

This structure refers to these other structures:

- Cancer Patient (http://hl7.eu/fhir/cancer-common/StructureDefinition/CancerPatient)
- CancerConditionAtDiagnosis (http://hl7.eu/fhir/cancer-common/StructureDefinition/CancerConditionAtDiagnosis)
- ClinicalCancerProgression (http://hl7.eu/fhir/cancer-common/StructureDefinition/ClinicalCancerProgression)

Other representations of profile: CSV, Excel