HL7 Europe Common Cancer Model
0.1.0 - ci-build 150

HL7 Europe Common Cancer Model, published by HL7 Europe. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-eu/cancer-common/ and changes regularly. See the Directory of published versions

Logical Model: Radiotherapy - Detailed Descriptions

Draft as of 2026-05-13

Definitions for the Radiotherapy logical model.

Guidance on how to interpret the contents of this table can be foundhere

0. Radiotherapy
Definition

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).

ShortRadiotherapy
Control0..*
Is Modifierfalse
Logical ModelInstances of this logical model are not marked to be the target of a Reference
Invariantsrt-1: If endDate is present, it should be greater than or equal to startDate. (endDate.empty() or endDate >= startDate)
2. Radiotherapy.subject
Definition

Reference to the patient (subject) receiving radiotherapy.

ShortSubject
Control1..1
Typehttp://hl7.eu/fhir/cancer-common/StructureDefinition/CancerPatient
4. Radiotherapy.cancerConditionAtDiagnosisReference
Definition

Reference to the cancer condition at diagnosis targeted by radiotherapy.

ShortCancerCondition AtDiagnosis Reference
Control1..1
TypeReference(CancerConditionAtDiagnosis)
6. Radiotherapy.clinicalCancerProgressionReference
Definition

Reference to the clinical progression event, if radiotherapy is delivered in response to progression.

ShortClinicalCancerProgresionReference
Comments

It is not only required at the time of diagnosis; it must be provided in the event of ClinicalCancerProgression.

Control0..1
TypeReference(ClinicalCancerProgression)
8. Radiotherapy.intent
Definition

Radiotherapy intent (Definitive/curative vs Palliative).

ShortIntent
Comments

Choice: Definitive | Palliative

Control1..1
TypeCodeableConcept
10. Radiotherapy.startDate
Definition

Start date of the radiotherapy course.

ShortStartDate
Control1..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. Radiotherapy.endDate
Definition

End date of the radiotherapy course (may be missing while ongoing).

ShortEndDate
Comments

It might not be available while the radiotherapy is still ongoing; however, an end date must eventually be recorded, which in the most extreme case will coincide with the patient's date of death.

Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
14. Radiotherapy.bodySite
Definition

Anatomical site(s) targeted by radiotherapy.

ShortBodySite
Control1..*
TypeCodeableConcept
16. Radiotherapy.setting
Definition

Strategic timing/setting of radiotherapy (e.g. neoadjuvant, adjuvant, concomitant, alone).

ShortSetting
Comments

Choice: Alone | Preoperative/Neoadjuvant | Postoperative/Adjuvant | Concomitant

Control0..1
TypeCodeableConcept

Guidance on how to interpret the contents of this table can be foundhere

0. Radiotherapy
Definition

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).

ShortRadiotherapy
Logical ModelInstances of this logical model are not marked to be the target of a Reference
Invariantsrt-1: If endDate is present, it should be greater than or equal to startDate. (endDate.empty() or endDate >= startDate)
2. Radiotherapy.subject
Definition

Reference to the patient (subject) receiving radiotherapy.

ShortSubject
Control1..1
Typehttp://hl7.eu/fhir/cancer-common/StructureDefinition/CancerPatient
4. Radiotherapy.cancerConditionAtDiagnosisReference
Definition

Reference to the cancer condition at diagnosis targeted by radiotherapy.

ShortCancerCondition AtDiagnosis Reference
Control1..1
TypeReference(CancerConditionAtDiagnosis)
6. Radiotherapy.clinicalCancerProgressionReference
Definition

Reference to the clinical progression event, if radiotherapy is delivered in response to progression.

ShortClinicalCancerProgresionReference
Comments

It is not only required at the time of diagnosis; it must be provided in the event of ClinicalCancerProgression.

Control0..1
TypeReference(ClinicalCancerProgression)
8. Radiotherapy.intent
Definition

Radiotherapy intent (Definitive/curative vs Palliative).

ShortIntent
Comments

Choice: Definitive | Palliative

Control1..1
TypeCodeableConcept
10. Radiotherapy.startDate
Definition

Start date of the radiotherapy course.

ShortStartDate
Control1..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. Radiotherapy.endDate
Definition

End date of the radiotherapy course (may be missing while ongoing).

ShortEndDate
Comments

It might not be available while the radiotherapy is still ongoing; however, an end date must eventually be recorded, which in the most extreme case will coincide with the patient's date of death.

Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
14. Radiotherapy.bodySite
Definition

Anatomical site(s) targeted by radiotherapy.

ShortBodySite
Control1..*
TypeCodeableConcept
16. Radiotherapy.setting
Definition

Strategic timing/setting of radiotherapy (e.g. neoadjuvant, adjuvant, concomitant, alone).

ShortSetting
Comments

Choice: Alone | Preoperative/Neoadjuvant | Postoperative/Adjuvant | Concomitant

Control0..1
TypeCodeableConcept

Guidance on how to interpret the contents of this table can be foundhere

0. Radiotherapy
Definition

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).

ShortRadiotherapy
Control0..*
Is Modifierfalse
Logical ModelInstances of this logical model are not marked to be the target of a Reference
Invariantsrt-1: If endDate is present, it should be greater than or equal to startDate. (endDate.empty() or endDate >= startDate)
2. Radiotherapy.subject
Definition

Reference to the patient (subject) receiving radiotherapy.

ShortSubject
Control1..1
Typehttp://hl7.eu/fhir/cancer-common/StructureDefinition/CancerPatient
4. Radiotherapy.cancerConditionAtDiagnosisReference
Definition

Reference to the cancer condition at diagnosis targeted by radiotherapy.

ShortCancerCondition AtDiagnosis Reference
Control1..1
TypeReference(CancerConditionAtDiagnosis)
6. Radiotherapy.clinicalCancerProgressionReference
Definition

Reference to the clinical progression event, if radiotherapy is delivered in response to progression.

ShortClinicalCancerProgresionReference
Comments

It is not only required at the time of diagnosis; it must be provided in the event of ClinicalCancerProgression.

Control0..1
TypeReference(ClinicalCancerProgression)
8. Radiotherapy.intent
Definition

Radiotherapy intent (Definitive/curative vs Palliative).

ShortIntent
Comments

Choice: Definitive | Palliative

Control1..1
TypeCodeableConcept
10. Radiotherapy.startDate
Definition

Start date of the radiotherapy course.

ShortStartDate
Control1..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
12. Radiotherapy.endDate
Definition

End date of the radiotherapy course (may be missing while ongoing).

ShortEndDate
Comments

It might not be available while the radiotherapy is still ongoing; however, an end date must eventually be recorded, which in the most extreme case will coincide with the patient's date of death.

Control0..1
TypedateTime
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
14. Radiotherapy.bodySite
Definition

Anatomical site(s) targeted by radiotherapy.

ShortBodySite
Control1..*
TypeCodeableConcept
16. Radiotherapy.setting
Definition

Strategic timing/setting of radiotherapy (e.g. neoadjuvant, adjuvant, concomitant, alone).

ShortSetting
Comments

Choice: Alone | Preoperative/Neoadjuvant | Postoperative/Adjuvant | Concomitant

Control0..1
TypeCodeableConcept