NAACCR Item #3420: Derived AJCC-7 M

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
3420 3 AJCC 2010 12

NAACCR XML: Tumor.derivedAjcc7M

Alternate Names
   Derived 7 M Storage Code
This item is the derived AJCC “M” staging element from coded fields using the CS algorithm. Effective for cases diagnosed 2010+.
Derived AJCC-7 M can be used to evaluate disease spread at diagnosis, plan and track treatment patterns, and analyze outcomes.
Codes (See the most current version of the Collaborative Stage Data Collection System (,13 for rules and site-specific codes and coding structures.)