Changes since version true:

Usage

Using AJCC terminology, examples of T categories include ‘ycTX’, used for post-therapy clinical staging if the tumor primary tumor cannot be evaluated, ‘pT0’, denoting there is no evidence of a primary tumor, and ‘pTis’, referencing carcinoma in situ (with some cancer-specific exceptions). Other T categories refer to increasing size of the primary tumor. Please note allowable T categories may vary between clinical, pathologic, and other classifications, and the T category prefix must align with Observation.code. The full set of allowable clinical, pathologic, and other (recurrence/retreatment/autopsy) T categories, along with current descriptions, can be accessed through the AJCC Staging Manual and any applicable updates and corrections, as well as the AJCC API.

This value set includes codes based on the following rules:

• Include codes from http://snomed.info/sct where concept descends from 1222585009 (American Joint Committee on Cancer clinical T category allowable value (qualifier value))
• Include codes from http://snomed.info/sct where concept descends from 1222589003 (American Joint Committee on Cancer pathological T category allowable value (qualifier value))
• Include codes from http://snomed.info/sct where concept descends from 1222595002 (American Joint Committee on Cancer ypT category allowable value (qualifier value))

Expansion based on SNOMED CT International edition 01-Feb 2024

This value set expansion contains 118 concepts.