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FHIR IG Statistics: StructureDefinition/Radiotherapy

Packagehl7.eu.fhir.idea4rc
TypeStructureDefinition
IdRadiotherapy
FHIR VersionR4
Sourcehttp://hl7.eu/fhir/ig/idea4rc/https://build.fhir.org/ig/hl7-eu/idea4rc/StructureDefinition-Radiotherapy.html
URLhttp://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy
Version0.1.0
Statusdraft
Date2025-07-22T14:45:28+00:00
NameRadiotherapyI4RC
TitleRadiotherapy
Realmeu
Authorityhl7
DescriptionRadiotherapy Maturity Level: 0 Draft
Typehttp://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy
Kindlogical

Resources that use this resource

ConceptMap
radiotherapy2FHIRRadiotherapy Model to this guide Map
StructureDefinition
AdverseEventAdverse Event

Resources that this resource uses

StructureDefinition
DiagnosisDiagnosis
EpisodeEventEpisode Event

Narrative

Note: links and images are rebased to the (stated) source

Generated Narrative: StructureDefinition Radiotherapy

NameFlagsCard.TypeDescription & Constraintsdoco
.. Radiotherapy 0..*BaseRadiotherapy
... diagnosisReference O1..*DiagnosisDiagnosis reference (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... episodeEventReference O1..*EpisodeEventEpisode Event reference (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... radiotherapyHospital O1..*stringRadiotherapy Hospital (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... intent O1..*CodeableConceptIntent (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... setting O0..*CodeableConceptSetting (M (only if Intent is Curative OR Unknown))
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... beamQuality O1..*CodeableConceptBeam quality (M)
ObligationsActor
SHALL:handleHead and Neck
... other O0..*stringOther; specify (O)
ObligationsActor
SHALL:handleHead and Neck
... treatmentTechnique O1..*CodeableConceptTreatment technique (M)
ObligationsActor
SHALL:handleHead and Neck
... totalDoseGy O1..*QuantityTotal Dose (TD) Gy (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... totalHighDose O0..*QuantityTotal High Dose (Gy) (R)
ObligationsActor
SHALL:handleHead and Neck
... numberOfFractions O1..*QuantityNumber of fractions (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... adaptiveRt O0..*booleanAdaptive RT (O)
ObligationsActor
SHALL:handleHead and Neck
... igrt O0..*booleanIGRT (image guide radiotherapy) (O)
ObligationsActor
SHALL:handleHead and Neck
... reirradiation O0..*booleanReirradiation (local or regional) (O)
ObligationsActor
SHALL:handleHead and Neck
... fieldOfReirradiation O0..*CodeableConceptField of Re-irradiation (O)
ObligationsActor
SHALL:handleHead and Neck
... startDate O1..*dateStart date (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... endDate O1..*dateEnd date (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... treatmentSitePrimaryOnly O0..*booleanTreatment site primary only (M (suggest to modify the label into Primary only))
ObligationsActor
SHALL:handleHead and Neck
... treatmentSiteNeckOnly O0..*booleanTreatment site neck only (M (suggest to modify the label into Neck only))
ObligationsActor
SHALL:handleHead and Neck
... treatmentSitePrimaryAndIpsilateralNeck O1..*booleanTreatment site primary and ipsilateral neck (M)
ObligationsActor
SHALL:handleHead and Neck
... treatmentSitePrimaryAndBilateralNeck O1..*booleanTreatment site primary and bilateral neck (M)
ObligationsActor
SHALL:handleHead and Neck
... treatmentSiteDistantMetastasis O1..*booleanTreatment site distant metastasis (M)
ObligationsActor
SHALL:handleHead and Neck
... otherTreatmentSite O0..*CodeableConceptOther Treatment Site (O)
ObligationsActor
SHALL:handleSarcoma
... metastaticTreatmentSiteLung O0..*booleanMetastatic treatment site lung (R)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... metastaticTreatmentSiteMediastinum O0..*booleanMetastatic treatment site mediastinum (R)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... metastaticTreatmentSiteBone O0..*booleanMetastatic treatment site bone (R)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... metastaticTreatmentSiteSoftTissue O0..*booleanMetastatic treatment site soft tissue (R)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... metastaticTreatmentSiteLiver O0..*booleanMetastatic treatment site liver (R)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... rtTreatmentCompletedAsPlanned O1..*CodeableConceptRT Treatment Completed as Planned? (M)
ObligationsActor
SHALL:handleHead and Neck
SHALL:handleSarcoma
... regionalDeepHyperthemia O1..*CodeableConceptRegional deep hyperthemia (M)
ObligationsActor
SHALL:handleSarcoma
... treatmentResponse O0..*CodeableConceptTreatment response (R)
ObligationsActor
SHALL:handleSarcoma

doco Documentation for this format

Source

{
  "resourceType": "StructureDefinition",
  "id": "Radiotherapy",
  "text": {
    "status": "extensions",
    "div": "<!-- snip (see above) -->"
  },
  "url": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy",
  "version": "0.1.0",
  "name": "RadiotherapyI4RC",
  "title": "Radiotherapy",
  "status": "draft",
  "date": "2025-07-22T14:45:28+00:00",
  "publisher": "IDEA4RC Project",
  "contact": [
    {
      "name": "IDEA4RC Project",
      "telecom": [
        {
          "system": "url",
          "value": "https://www.idea4rc.eu/"
        }
      ]
    },
    {
      "name": "IDEA4RC Project",
      "telecom": [
        {
          "system": "url",
          "value": "https://www.idea4rc.eu/"
        }
      ]
    }
  ],
  "description": "Radiotherapy\nMaturity Level: 0 Draft",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "150",
          "display": "Europe"
        }
      ]
    }
  ],
  "fhirVersion": "4.0.1",
  "kind": "logical",
  "abstract": false,
  "type": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Base",
  "derivation": "specialization",
  "snapshot": {
    "extension": [
      {
        "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
        "valueString": "4.0.1"
      }
    ],
    "element": [
      {
        "id": "Radiotherapy",
        "path": "Radiotherapy",
        "short": "Radiotherapy",
        "definition": "Radiotherapy\nMaturity Level: 0 Draft",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Base",
          "min": 0,
          "max": "*"
        },
        "isModifier": false
      },
      {
        "id": "Radiotherapy.diagnosisReference",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.diagnosisReference",
        "short": "Diagnosis reference (M)",
        "definition": "Diagnosis reference in case the treatment was done for baseline",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.diagnosisReference",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Diagnosis"
          }
        ]
      },
      {
        "id": "Radiotherapy.episodeEventReference",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.episodeEventReference",
        "short": "Episode Event reference (M)",
        "definition": "EpisodeEvent element containing the data regarding the patient's cancer",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.episodeEventReference",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/EpisodeEvent"
          }
        ]
      },
      {
        "id": "Radiotherapy.radiotherapyHospital",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.radiotherapyHospital",
        "short": "Radiotherapy Hospital (M)",
        "definition": "Whether it was performed at the registering hospital or another hospital.",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.radiotherapyHospital",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Radiotherapy.intent",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.intent",
        "short": "Intent (M)",
        "definition": "Radiotherapy intent refers to whether the intention of treatment is to cure the patient or to treat symptoms and palliate",
        "comment": "Palliative - 4179711\nCurative procedure intent - 4162591",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.intent",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.setting",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.setting",
        "short": "Setting (M (only if Intent is Curative OR Unknown))",
        "definition": "Whether radiotherapy is delivered as the main treatment modality (definitive) or if it is delivered before or after another treatment such as surgery \nTHIS INFO CAN BE DERIVED AT QUERY TIME (OMOP)\n\nPreoperative: Refers to radiotherapy given before surgery.\nPreoperative Concomitant to Systemic Treatment: Radiotherapy administered before surgery, alongside systemic treatments (like chemotherapy).\nPostoperative: Radiotherapy given after surgery.\nPostoperative Concomitant to Systemic Treatment: Radiotherapy given after surgery along with systemic treatments.\nDefinitive: Radiotherapy used as the primary treatment without planned surgery.\nDefinitive Concomitant to Systemic Treatment: Radiotherapy used as the main treatment alongside systemic therapy with curative intent.\n\nWe need to check it also at query time. So we are deriving the information at query time and we will also perform quality checks. Additionally, do them at normalized table in possible cases.",
        "comment": "Preoperative -  4059384\nPreoperative radiotherapy concomitant to systemic treatment - 2000100031\nPostoperative - 4058775\nPostoperative concomitant to systemic treatment - 2000100032\nDefinitive radiotherapy - 2000100033\nDefinitive radiotherapy concomitant to systemic treatment - 2000100034",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.setting",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.beamQuality",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.beamQuality",
        "short": "Beam quality (M)",
        "definition": "Describes the type of radiation therapy given. If external beam, please specify if delivered with Photons (most common), electrons, carbon, or protons. \n'External beam RT Photons - 607996\n External beam RT Electrons - 4165039\nExternal beam radiation therapy using carbon ions - 607995\nExternal Beam RT Protons - 4024005\nBrachytherapy interstitial endocavitary contact - 4012485\nRadionuclide therapy - 4161415\nBoron neutron capture Therapy - 4058601\nother -  4077953'\n'2D - 603132\nThree dimensional external beam radiation therapy - 37156151\nIMRT CONVENTIONAL - 40480519\nVMAT - 603135\nTomotherapy - 3662120\nSBRT - 4215577\nUltra high dose rate radiotherapy - 37156211\nPASSIVE SCATTERING - \nSINGLE BEAM OPTIMIZATION - CUSTOM CODE\nIntensity Modulated Proton Therapy (IMPT) - CUSTOM CODE \nOther -  4077990'",
        "comment": "External beam RT Photons - 607996\n External beam RT Electrons - 4165039\nExternal beam radiation therapy using carbon ions - 607995\nExternal Beam RT Protons - 4024005\nBrachytherapy interstitial endocavitary contact - 4012485\nRadionuclide therapy - 4161415\nBoron neutron capture Therapy - 4058601\nother -  4077953",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.beamQuality",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.other",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.other",
        "short": "Other; specify (O)",
        "definition": "Other; specify (O)",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.other",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentTechnique",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentTechnique",
        "short": "Treatment technique (M)",
        "definition": "Refers to the type of radiotherapy treatment delivered \n'External beam RT Photons - 607996\n External beam RT Electrons - 4165039\nExternal beam radiation therapy using carbon ions - 607995\nExternal Beam RT Protons - 4024005\nBrachytherapy interstitial endocavitary contact - 4012485\nRadionuclide therapy - 4161415\nBoron neutron capture Therapy - 4058601\nother -  4077953'\n'2D - 603132\nThree dimensional external beam radiation therapy - 37156151\nIMRT CONVENTIONAL - 40480519\nVMAT - 603135\nTomotherapy - 3662120\nSBRT - 4215577\nUltra high dose rate radiotherapy - 37156211\nPASSIVE SCATTERING - \nSINGLE BEAM OPTIMIZATION - CUSTOM CODE\nIntensity Modulated Proton Therapy (IMPT) - CUSTOM CODE \nOther -  4077990'",
        "comment": "Two dimensional (2D) radiotherapy - 2000100035\nThree dimensional (3D) radiotherapy - 2000100036\nIntensity modulated radiation therapy (IMRT) - 2000100037\nVolumetric modulated arc therapy (VMAT) - 2000100038\nTomotherapy - 2000100039\nStereotactic radiotherapy (SBRT) - 2000100040\nUltra high dose rate radiotherapy (Flash therapy) - 2000100041\nPassive scattering - 2000100042\nSingle beam optimization - 2000100043\nIntensity modulated proton therapy (IMPT) - 2000100044",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.treatmentTechnique",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.totalDoseGy",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.totalDoseGy",
        "short": "Total Dose (TD) Gy (M)",
        "definition": "Refers to the total dose delivered to the patient in Gy",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.totalDoseGy",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Radiotherapy.totalHighDose",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.totalHighDose",
        "short": "Total High Dose (Gy) (R)",
        "definition": "Refers to the highest dose delivered to the patient. In a SIB boost and SEQ (only with a single beam) this varibale contains the same value of theTotal Dose. Value only expected for progression, recurrence...",
        "comment": "High dose - 4129296",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.totalHighDose",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Radiotherapy.numberOfFractions",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.numberOfFractions",
        "short": "Number of fractions (M)",
        "definition": "Refers to the total number of fractions delivered to the patient",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.numberOfFractions",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Radiotherapy.adaptiveRt",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.adaptiveRt",
        "short": "Adaptive RT (O)",
        "definition": "Refers to whether treatment planning was changed or adapted after the initial radiation plan was developed. This could be due to a change in the patient’s anatomy or if the tumor changed in size.",
        "comment": "Adaptive radiotherapy - 2000100045",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.adaptiveRt",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.igrt",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.igrt",
        "short": "IGRT  (image guide radiotherapy) (O)",
        "definition": "Refers to whether image guided radiotherapy was used for delivery of radiotherapy and to check the patient set up. This includes MV, KV, or Cone Beam CT imaging.",
        "comment": "Image guided radiotherapy (IGRT) - 2000100046",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.igrt",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.reirradiation",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.reirradiation",
        "short": "Reirradiation (local or regional) (O)",
        "definition": "Whether the patient was re-irradiated loco-regionally. Value only expected for progression, recurrence...",
        "comment": "NOT to be recorded in OMOP, it should be derived from second radiotherapy in same site.",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.reirradiation",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.fieldOfReirradiation",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.fieldOfReirradiation",
        "short": "Field of Re-irradiation (O)",
        "definition": "Specifes the reason for loco-regional re-irradiation. Value only expected for progression, recurrence...",
        "comment": "Re-irradiation in field of first radiation - 2000100047\nRe-irradiation out of field of first radiation - 2000100048\nRe-irradiation marginal field of first radiation - 2000100049",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.fieldOfReirradiation",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.startDate",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.startDate",
        "short": "Start date (M)",
        "definition": "Date when  the first radiation treatment was delivered",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.startDate",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "date"
          }
        ]
      },
      {
        "id": "Radiotherapy.endDate",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.endDate",
        "short": "End  date (M)",
        "definition": "Date when the last radiation treatment ended",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.endDate",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "date"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSitePrimaryOnly",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSitePrimaryOnly",
        "short": "Treatment site primary only (M (suggest to modify the label into Primary only))",
        "definition": "Treatment site primary only (M (suggest to modify the label into Primary only))",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.treatmentSitePrimaryOnly",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSiteNeckOnly",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSiteNeckOnly",
        "short": "Treatment site neck only (M (suggest to modify the label into Neck only))",
        "definition": "Treatment site neck only (M (suggest to modify the label into Neck only))",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.treatmentSiteNeckOnly",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSitePrimaryAndIpsilateralNeck",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSitePrimaryAndIpsilateralNeck",
        "short": "Treatment site primary and ipsilateral neck (M)",
        "definition": "Refers to the areas that the radiation is targeting. This could include the primary tumor , the neck lymph nodes, the ipsilateral neck and the primary, the bilateral neck and the primary, or a distant metastatic lesion",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.treatmentSitePrimaryAndIpsilateralNeck",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSitePrimaryAndBilateralNeck",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSitePrimaryAndBilateralNeck",
        "short": "Treatment site primary and bilateral neck (M)",
        "definition": "Refers to the areas that the radiation is targeting. This could include the primary tumor , the neck lymph nodes, the ipsilateral neck and the primary, the bilateral neck and the primary, or a distant metastatic lesion",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.treatmentSitePrimaryAndBilateralNeck",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSiteDistantMetastasis",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSiteDistantMetastasis",
        "short": "Treatment site distant metastasis (M)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other.",
        "comment": "Metastasis - 36769180\n\nNO SPECIFIC CODE (DEPRECATED)",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.treatmentSiteDistantMetastasis",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.otherTreatmentSite",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.otherTreatmentSite",
        "short": "Other Treatment Site (O)",
        "definition": "Specific treatment side by code for Sarcoma",
        "comment": "Any code either from ICDO Topography or CancerModifier Topography in Athena",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.otherTreatmentSite",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteLung",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteLung",
        "short": "Metastatic treatment site lung (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other.",
        "comment": "Metastasis to lung - 36770283",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.metastaticTreatmentSiteLung",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteMediastinum",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteMediastinum",
        "short": "Metastatic treatment site mediastinum (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other.",
        "comment": "Metastasis to mediastinum - 35225542",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.metastaticTreatmentSiteMediastinum",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteBone",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteBone",
        "short": "Metastatic treatment site bone (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other.",
        "comment": "Metastasis to bone - 36769301",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.metastaticTreatmentSiteBone",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteSoftTissue",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteSoftTissue",
        "short": "Metastatic treatment site soft tissue (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other.",
        "comment": "Metastasis to soft tissues - 35225724",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.metastaticTreatmentSiteSoftTissue",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteLiver",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteLiver",
        "short": "Metastatic treatment site liver (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other.",
        "comment": "Metastasis to liver - 36770544",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.metastaticTreatmentSiteLiver",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.rtTreatmentCompletedAsPlanned",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.rtTreatmentCompletedAsPlanned",
        "short": "RT Treatment Completed as Planned? (M)",
        "definition": "Refers to whether patient completed all treatment as planned or if it had to be interrupted due to several reasons including toxicity, a co-morbidity preventing the delivery of radiation (pulmonary embolism, failure to thrive during RT), death due to progression of the cancer or patient decision \nCheck CODES",
        "comment": "Completed successfully - 44788181\nRadiotherapy course change due to acute radiotherapy toxicity - 4161588\nTreatment ended due to comorbidity - CUSTOM CODE \nIntolerance - 4105297\nProcedure discontinued by patient - 37017062\nDeath - 4306655",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.rtTreatmentCompletedAsPlanned",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.regionalDeepHyperthemia",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.regionalDeepHyperthemia",
        "short": "Regional deep hyperthemia (M)",
        "definition": "Whether Regional Deep Hyperthemia was applied with the RT (information for Regional Deep Hyperthemia can be found in the specific entity) \nRedundant",
        "min": 1,
        "max": "*",
        "base": {
          "path": "Radiotherapy.regionalDeepHyperthemia",
          "min": 1,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentResponse",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              },
              {
                "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-source",
                "valueUri": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Radiotherapy|0.1.0"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentResponse",
        "short": "Treatment response (R)",
        "definition": "Clinical treatment response for the radiotherapy \nOLD\n\nComplete response - 4163135\nPartial response -  4161302\nStable disease - 32948\nProgression - 4168352\nUnknown - 4129922\n\n'A treatment response is a record of the EPISODE table;\nepisode_start_date is end date of regimen;\nepisode_object_concept_id is the overarching sarcoma'",
        "comment": "Complete Remission - 32946\nPartial Remission - 32947\nStable Disease - 32948\nProgression - 32949\nNot applicable - 4294169 (Not usable in OMOP)",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Radiotherapy.treatmentResponse",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "id": "Radiotherapy",
        "path": "Radiotherapy",
        "short": "Radiotherapy",
        "definition": "Radiotherapy\nMaturity Level: 0 Draft"
      },
      {
        "id": "Radiotherapy.diagnosisReference",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.diagnosisReference",
        "short": "Diagnosis reference (M)",
        "definition": "Diagnosis reference in case the treatment was done for baseline ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/Diagnosis"
          }
        ]
      },
      {
        "id": "Radiotherapy.episodeEventReference",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.episodeEventReference",
        "short": "Episode Event reference (M)",
        "definition": "EpisodeEvent element containing the data regarding the patient's cancer ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "http://hl7.eu/fhir/ig/idea4rc/StructureDefinition/EpisodeEvent"
          }
        ]
      },
      {
        "id": "Radiotherapy.radiotherapyHospital",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.radiotherapyHospital",
        "short": "Radiotherapy Hospital (M)",
        "definition": "Whether it was performed at the registering hospital or another hospital. ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Radiotherapy.intent",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.intent",
        "short": "Intent (M)",
        "definition": "Radiotherapy intent refers to whether the intention of treatment is to cure the patient or to treat symptoms and palliate ",
        "comment": "Palliative - 4179711\nCurative procedure intent - 4162591",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.setting",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.setting",
        "short": "Setting (M (only if Intent is Curative OR Unknown))",
        "definition": "Whether radiotherapy is delivered as the main treatment modality (definitive) or if it is delivered before or after another treatment such as surgery \nTHIS INFO CAN BE DERIVED AT QUERY TIME (OMOP)\n\nPreoperative: Refers to radiotherapy given before surgery.\nPreoperative Concomitant to Systemic Treatment: Radiotherapy administered before surgery, alongside systemic treatments (like chemotherapy).\nPostoperative: Radiotherapy given after surgery.\nPostoperative Concomitant to Systemic Treatment: Radiotherapy given after surgery along with systemic treatments.\nDefinitive: Radiotherapy used as the primary treatment without planned surgery.\nDefinitive Concomitant to Systemic Treatment: Radiotherapy used as the main treatment alongside systemic therapy with curative intent.\n\nWe need to check it also at query time. So we are deriving the information at query time and we will also perform quality checks. Additionally, do them at normalized table in possible cases.",
        "comment": "Preoperative -  4059384\nPreoperative radiotherapy concomitant to systemic treatment - 2000100031\nPostoperative - 4058775\nPostoperative concomitant to systemic treatment - 2000100032\nDefinitive radiotherapy - 2000100033\nDefinitive radiotherapy concomitant to systemic treatment - 2000100034",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.beamQuality",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.beamQuality",
        "short": "Beam quality (M)",
        "definition": "Describes the type of radiation therapy given. If external beam, please specify if delivered with Photons (most common), electrons, carbon, or protons. \n'External beam RT Photons - 607996\n External beam RT Electrons - 4165039\nExternal beam radiation therapy using carbon ions - 607995\nExternal Beam RT Protons - 4024005\nBrachytherapy interstitial endocavitary contact - 4012485\nRadionuclide therapy - 4161415\nBoron neutron capture Therapy - 4058601\nother -  4077953'\n'2D - 603132\nThree dimensional external beam radiation therapy - 37156151\nIMRT CONVENTIONAL - 40480519\nVMAT - 603135\nTomotherapy - 3662120\nSBRT - 4215577\nUltra high dose rate radiotherapy - 37156211\nPASSIVE SCATTERING - \nSINGLE BEAM OPTIMIZATION - CUSTOM CODE\nIntensity Modulated Proton Therapy (IMPT) - CUSTOM CODE \nOther -  4077990'",
        "comment": "External beam RT Photons - 607996\n External beam RT Electrons - 4165039\nExternal beam radiation therapy using carbon ions - 607995\nExternal Beam RT Protons - 4024005\nBrachytherapy interstitial endocavitary contact - 4012485\nRadionuclide therapy - 4161415\nBoron neutron capture Therapy - 4058601\nother -  4077953",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.other",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.other",
        "short": "Other; specify (O)",
        "definition": "Other; specify (O)",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentTechnique",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentTechnique",
        "short": "Treatment technique (M)",
        "definition": "Refers to the type of radiotherapy treatment delivered \n'External beam RT Photons - 607996\n External beam RT Electrons - 4165039\nExternal beam radiation therapy using carbon ions - 607995\nExternal Beam RT Protons - 4024005\nBrachytherapy interstitial endocavitary contact - 4012485\nRadionuclide therapy - 4161415\nBoron neutron capture Therapy - 4058601\nother -  4077953'\n'2D - 603132\nThree dimensional external beam radiation therapy - 37156151\nIMRT CONVENTIONAL - 40480519\nVMAT - 603135\nTomotherapy - 3662120\nSBRT - 4215577\nUltra high dose rate radiotherapy - 37156211\nPASSIVE SCATTERING - \nSINGLE BEAM OPTIMIZATION - CUSTOM CODE\nIntensity Modulated Proton Therapy (IMPT) - CUSTOM CODE \nOther -  4077990'",
        "comment": "Two dimensional (2D) radiotherapy - 2000100035\nThree dimensional (3D) radiotherapy - 2000100036\nIntensity modulated radiation therapy (IMRT) - 2000100037\nVolumetric modulated arc therapy (VMAT) - 2000100038\nTomotherapy - 2000100039\nStereotactic radiotherapy (SBRT) - 2000100040\nUltra high dose rate radiotherapy (Flash therapy) - 2000100041\nPassive scattering - 2000100042\nSingle beam optimization - 2000100043\nIntensity modulated proton therapy (IMPT) - 2000100044",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.totalDoseGy",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.totalDoseGy",
        "short": "Total Dose (TD) Gy (M)",
        "definition": "Refers to the total dose delivered to the patient in Gy ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Radiotherapy.totalHighDose",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.totalHighDose",
        "short": "Total High Dose (Gy) (R)",
        "definition": "Refers to the highest dose delivered to the patient. In a SIB boost and SEQ (only with a single beam) this varibale contains the same value of theTotal Dose. Value only expected for progression, recurrence... ",
        "comment": "High dose - 4129296",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Radiotherapy.numberOfFractions",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.numberOfFractions",
        "short": "Number of fractions (M)",
        "definition": "Refers to the total number of fractions delivered to the patient ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Radiotherapy.adaptiveRt",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.adaptiveRt",
        "short": "Adaptive RT (O)",
        "definition": "Refers to whether treatment planning was changed or adapted after the initial radiation plan was developed. This could be due to a change in the patient’s anatomy or if the tumor changed in size. ",
        "comment": "Adaptive radiotherapy - 2000100045",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.igrt",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.igrt",
        "short": "IGRT  (image guide radiotherapy) (O)",
        "definition": "Refers to whether image guided radiotherapy was used for delivery of radiotherapy and to check the patient set up. This includes MV, KV, or Cone Beam CT imaging. ",
        "comment": "Image guided radiotherapy (IGRT) - 2000100046",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.reirradiation",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.reirradiation",
        "short": "Reirradiation (local or regional) (O)",
        "definition": "Whether the patient was re-irradiated loco-regionally. Value only expected for progression, recurrence... ",
        "comment": "NOT to be recorded in OMOP, it should be derived from second radiotherapy in same site.",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.fieldOfReirradiation",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.fieldOfReirradiation",
        "short": "Field of Re-irradiation (O)",
        "definition": "Specifes the reason for loco-regional re-irradiation. Value only expected for progression, recurrence... ",
        "comment": "Re-irradiation in field of first radiation - 2000100047\nRe-irradiation out of field of first radiation - 2000100048\nRe-irradiation marginal field of first radiation - 2000100049",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.startDate",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.startDate",
        "short": "Start date (M)",
        "definition": "Date when  the first radiation treatment was delivered ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "date"
          }
        ]
      },
      {
        "id": "Radiotherapy.endDate",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.endDate",
        "short": "End  date (M)",
        "definition": "Date when the last radiation treatment ended ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "date"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSitePrimaryOnly",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSitePrimaryOnly",
        "short": "Treatment site primary only (M (suggest to modify the label into Primary only))",
        "definition": "Treatment site primary only (M (suggest to modify the label into Primary only))",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSiteNeckOnly",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSiteNeckOnly",
        "short": "Treatment site neck only (M (suggest to modify the label into Neck only))",
        "definition": "Treatment site neck only (M (suggest to modify the label into Neck only))",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSitePrimaryAndIpsilateralNeck",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSitePrimaryAndIpsilateralNeck",
        "short": "Treatment site primary and ipsilateral neck (M)",
        "definition": "Refers to the areas that the radiation is targeting. This could include the primary tumor , the neck lymph nodes, the ipsilateral neck and the primary, the bilateral neck and the primary, or a distant metastatic lesion ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSitePrimaryAndBilateralNeck",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSitePrimaryAndBilateralNeck",
        "short": "Treatment site primary and bilateral neck (M)",
        "definition": "Refers to the areas that the radiation is targeting. This could include the primary tumor , the neck lymph nodes, the ipsilateral neck and the primary, the bilateral neck and the primary, or a distant metastatic lesion ",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentSiteDistantMetastasis",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentSiteDistantMetastasis",
        "short": "Treatment site distant metastasis (M)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other. ",
        "comment": "Metastasis - 36769180\n\nNO SPECIFIC CODE (DEPRECATED)",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.otherTreatmentSite",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.otherTreatmentSite",
        "short": "Other Treatment Site (O)",
        "definition": "Specific treatment side by code for Sarcoma",
        "comment": "Any code either from ICDO Topography or CancerModifier Topography in Athena",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteLung",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteLung",
        "short": "Metastatic treatment site lung (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other. ",
        "comment": "Metastasis to lung - 36770283",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteMediastinum",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteMediastinum",
        "short": "Metastatic treatment site mediastinum (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other. ",
        "comment": "Metastasis to mediastinum - 35225542",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteBone",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteBone",
        "short": "Metastatic treatment site bone (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other. ",
        "comment": "Metastasis to bone - 36769301",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteSoftTissue",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteSoftTissue",
        "short": "Metastatic treatment site soft tissue (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other. ",
        "comment": "Metastasis to soft tissues - 35225724",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.metastaticTreatmentSiteLiver",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.metastaticTreatmentSiteLiver",
        "short": "Metastatic treatment site liver (R)",
        "definition": "Designates which treatment sites were irradiated. Lung Vs Mediastinum Vs Bone Vs soft tissue vs liver Vs other. ",
        "comment": "Metastasis to liver - 36770544",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Radiotherapy.rtTreatmentCompletedAsPlanned",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-headneck-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          },
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.rtTreatmentCompletedAsPlanned",
        "short": "RT Treatment Completed as Planned? (M)",
        "definition": "Refers to whether patient completed all treatment as planned or if it had to be interrupted due to several reasons including toxicity, a co-morbidity preventing the delivery of radiation (pulmonary embolism, failure to thrive during RT), death due to progression of the cancer or patient decision \nCheck CODES",
        "comment": "Completed successfully - 44788181\nRadiotherapy course change due to acute radiotherapy toxicity - 4161588\nTreatment ended due to comorbidity - CUSTOM CODE \nIntolerance - 4105297\nProcedure discontinued by patient - 37017062\nDeath - 4306655",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.regionalDeepHyperthemia",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.regionalDeepHyperthemia",
        "short": "Regional deep hyperthemia (M)",
        "definition": "Whether Regional Deep Hyperthemia was applied with the RT (information for Regional Deep Hyperthemia can be found in the specific entity) \nRedundant",
        "min": 1,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Radiotherapy.treatmentResponse",
        "extension": [
          {
            "extension": [
              {
                "url": "code",
                "valueCode": "SHALL:handle"
              },
              {
                "url": "actor",
                "valueCanonical": "http://hl7.eu/fhir/ig/idea4rc/actor-sarcoma-i4rc"
              }
            ],
            "url": "http://hl7.org/fhir/StructureDefinition/obligation"
          }
        ],
        "path": "Radiotherapy.treatmentResponse",
        "short": "Treatment response (R)",
        "definition": "Clinical treatment response for the radiotherapy \nOLD\n\nComplete response - 4163135\nPartial response -  4161302\nStable disease - 32948\nProgression - 4168352\nUnknown - 4129922\n\n'A treatment response is a record of the EPISODE table;\nepisode_start_date is end date of regimen;\nepisode_object_concept_id is the overarching sarcoma'\n\n\n\n",
        "comment": "Complete Remission - 32946\nPartial Remission - 32947\nStable Disease - 32948\nProgression - 32949\nNot applicable - 4294169 (Not usable in OMOP)",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      }
    ]
  }
}