NAACCR Item #2850: CS Mets at DX

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
2850 2 AJCC 2003 10

NAACCR XML: Tumor.csMetsAtDx

Alternate Names
   CS Metastasis at Diagnosis
Identifies the distant site(s) of metastatic involvement at time of diagnosis.
The presence of metastatic disease at diagnosis is an independent prognostic indicator, and it is used by Collaborative Staging to derive TNM-M codes and SEER Summary Stage codes.
Codes (See the most current version of the Collaborative Stage Data Collection System (,13 for rules and site-specific codes and coding structures.)