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: TNM Regional Nodes Staging Type Value Set

Official URL: Version: 4.0.0-ballot
Active as of 2024-04-09 Maturity Level: 4 Computable Name: TNMRegionalNodesStagingTypeVS
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

Identifying codes for the type of cancer staging performed for AJCC N category, i.e., clinical, pathological, or other, for regional nodes (N) staging observation.


Changes since version true:


The codes in this value set designate the staging observation as either clinical, pathological, or other. In AJCC terminology, clinical staging is represented by “c” or “yc” prefix, referring to staging done before first treatment, or staging done post-therapy or post-neoadjuvant therapy but before surgery. Pathological classification, represented by “p” or “yp” prefix, is used for patients if surgery is the first definitive therapy, or after neoadjuvant therapy and planned post-neoadjuvant therapy surgery. The “Other” code is meant to include staging at the time of recurrence or progression (“r” prefix), or for cancers not previously recognized and found as an incidental finding at autopsy (“a” prefix). The values from this value set appear in the Observation.code element.

Logical Definition (CLD)



Expansion based on SNOMED CT International edition 01-Feb 2024

This value set contains 3 concepts.

  277206009 stages
  399534004 category (observable entity)
  371494008 category

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