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Terminology owner/maintenance organisation

Name, contact details, website

American Joint Committee on Cancer

Formal name of the code system

The TNM Cancer Staging System

Short name or abbreviation of the code system name

Technical identifier/s for the code system 

Canonical URL:

Scope/domain statement for the code system

(Official or from HTA)

Cancer staging is the process of determining how much cancer is in the body and where it is located. Staging describes the severity of an individual's cancer based on the magnitude of the original (primary) tumor as well as on the extent cancer has spread in the body. Understanding the stage of the cancer helps doctors to develop a prognosis and design a treatment plan for individual patients.

Staging provides a common language for doctors to effectively communicate about a patient’s cancer and collaborate on the best courses of treatment.

The TNM Staging System was developed and is maintained by the AJCC and the Union for International Cancer Control (UICC). It is the most commonly used staging system by medical professionals around the world. The TNM classification system was developed as a tool for doctors to stage different types of cancer based on certain, standardized criteria.

The TNM Staging System is based on the extent of the tumor (T), the extent of spread to the lymph nodes (N), and the presence of metastasis (M).

Link to information about the code system - including how to obtain the content

Arrangement or agreements with HL7 for use of content

Version management - timing and identification of versions

IP Information and Licensing Information

Proprietary terminology; license fee applies

HL7 users of this information - which HL7 products use this link (if known)

Process to request content change

Other useful Information

Note: Most content of TNM (V6) is in the SNOMED international release but not content from the most recent (V9).  In Europe many countries use TNM codes, taken from the book and referenced using an OID

Information current as at (date)

April 2020
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