Collaborative Stage

Collaborative Stage for TNM 7 - Revised 12/21/2009 [ Schema ]

CS Mets at DX

Note: With the implementation of AJCC 7th edition, mucinous tumors with peritoneal involvement confined to the right lower quadrant were changed from M1 to T4a. Therefore, these should be coded in CS Extension.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
00	No; none	M0	M0	NONE	NONE
05	For mucinous tumors only: Intraperitoneal metastasis BEYOND the right lower quadrant, including pseudomyxoma peritonei	M1a	M1	D	D
07	For non-mucinous tumors: Any intraperitoneal spread	M1b	M1	D	D
08	Superior mesenteric lymph nodes	M1b	M1	RN	D
10	Distant lymph node(s) other than code 08	M1b	M1	D	D
20	For mucinous tumors only: (10 or 08) + (05) Distant lymph node(s) plus intraperitoneal metastasis BEYOND the right lower quadrant, including pseudomyxoma peritonei	M1b	M1	D	D
25	For non-mucinous tumors only: (10 or 08) + (07) Distant lymph node(s) plus intraperitoneal spread	M1b	M1	D	D
40	OBSOLETE DATA RETAINED V0200 See codes 45 and 60 Distant metastases except distant lymph node(s) (codes 08-10) Carcinomatosis	ERROR	M1	D	D
45	Distant metastases except distant lymph node(s) (codes 08-10) or peritoneal spread	M1b	M1	D	D
50	(45) + (10) Distant lymph node(s) plus other distant metastases	M1b	M1	D	D
60	Distant metastasis, NOS Stated as M1[NOS] with no other information on distant metastases	M1NOS	M1	D	D
99	Unknown if distant metastasis Cannot be assessed Not documented in patient record	M0	MX	U	U