minimal Common Oncology Data Elements (mCODE) Implementation Guide
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minimal Common Oncology Data Elements (mCODE) Implementation Guide, published by HL7 International / Clinical Interoperability Council. This guide is not an authorized publication; it is the continuous build for version 4.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of and changes regularly. See the Directory of published versions

ValueSet: Radiotherapy Treatment Location Qualifier Value Set

Official URL: Version: 4.0.0-ballot
Active as of 2024-04-09 Maturity Level: 3 Computable Name: RadiotherapyTreatmentLocationQualifierVS
Other Identifiers: OID:2.16.840.1.113883.4.642.

Copyright/Legal: This value set includes content from SNOMED CT, which is copyright © 2002+ International Health Terminology Standards Development Organisation (IHTSDO), and distributed by agreement between IHTSDO and HL7. Implementer use of SNOMED CT is not covered by this agreement

Various modifiers that can be applied to body locations where radiotherapy treatments can be directed.


Changes since version true:


The codes and qualifiers for Radiotherapy Treatment Locations correspond to body structures defined in AAPM Task Group 263 Final Report, but are drawn from SNOMED CT (SCT).


To prevent a combinatorial explosion of codes, and to describe each treatment location uniquely, these qualifiers are used in conjunction with codes taken from the Radiotherapy Treatment Location Value Set, to specify a body location. For example, to specify the lower lobe of right lung, the code for lobe of lung structure (SCT#31094006) would be qualified with the codes lower (SCT#261122009) and right (SCT#24028007).

The content of this value set and the associated Radiotherapy Treatment Location Value Set supports expression of all of the anatomical concepts in the American Association of Physicists in Medicine (AAPM) Task Group 263 report on Standardizing Nomenclatures in Radiation Oncology. The mapping from AAPM TG263 concepts to SNOMED CT codes and qualifiers can be found in this spreadsheet, as well as in this concept map.

Logical Definition (CLD)

This value set includes codes based on the following rules:

This value set excludes codes based on the following rules:



Expansion based on:

This value set expansion contains 51 concepts.

  258400004 node level I
  258401000 node level II
  258402007 node level III
  258403002 node level IV
  258404008 node level V
  258405009 node level VI
  395168005 node level VII (qualifier value)
  1162613003 node level Xb
  1162614009 node level X (qualifier value)
  1162615005 node level Xa
  1162616006 node level Ia (qualifier value)
  1162617002 node level Ib (qualifier value)
  1162618007 node level VIII (qualifier value)
  1162619004 node level IX
  1162620005 node level IVa (qualifier value)
  1162621009 node level IVb
  1162622002 node level Va (qualifier value)
  1162623007 node level Vb
  1162624001 node level Vc (qualifier value)
  1162625000 node level VIa
  1162626004 node level VIb (qualifier value)
  1162627008 node level VIIb
  1162628003 node level VIIa (qualifier value)
  1284814003 node level IIa (qualifier value)
  1284815002 node level IIb (qualifier value)
  51440002 and left
  399488007 (qualifier value)
  277733009 1
  277734003 2
  277735002 3
  410679008 (qualifier value)
  1217011006 (qualifier value)

Explanation of the columns that may appear on this page:

Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
System The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance)
Display The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition An explanation of the meaning of the concept
Comments Additional notes about how to use the code