Collaborative Stage

Collaborative Stage for TNM 7 - Revised 10/31/2010 [ Schema ]

Appendix

CS Mets at DX

Note: With the implementation of AJCC 7 staging, mucinous tumors (morphology codes 8480, 8481, and 8490) with peritoneal involvement confined to the right lower quadrant (RLQ) are classified as T4a. Therefore, such peritoneal metastases are coded in CS Extension.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
00	No distant metastasis	M0	*	NONE	NONE
05	For mucinous tumors only: Intraperitoneal metastasis BEYOND the right lower quadrant, including pseudomyxoma peritonei Stated as M1a with no other information on distant metastasis	M1a	M1	D	D
07	OBSOLETE DATA CONVERTED V0203 See code 23 For non-mucinous tumors: Any intraperitoneal spread	ERROR	ERROR	ERROR	ERROR
08	Superior mesenteric lymph nodes	M1b	M1	RN	D
10	Distant lymph node(s) other than those in code 08 (Includes inferior mesenteric lymph node(s)) Distant lymph node(s), NOS	M1b	M1	D	D
20	For mucinous tumors only: (08 and/or 10) + 05 Distant lymph node(s) plus intraperitoneal metastasis BEYOND the right lower quadrant, including pseudomyxoma peritonei	M1b	M1	D	D
23	For non-mucinous tumors only: Any intraperitoneal spread	M1b	M1	D	D
25	For non-mucinous tumors only: 23 + (08 and/or 10) Intraperitoneal spread plus distant lymph node(s)	M1b	M1	D	D
40	OBSOLETE DATA RETAINED V0200 See codes 45 and 60 Distant metastases except distant lymph node(s) Distant metastasis, NOSCarcinomatosis	ERROR	M1	D	D
45	Distant metastasis except distant lymph node(s) and intraperitoneal spread Non-peritoneal metastasis Carcinomatosis	M1b	M1	D	D
50	45 + (10 and/or 08 Distant metastasis plus distant lymph node(s)	M1b	M1	D	D
55	Stated as M1b with no other information on distant metastasis	M1b	M1	D	D
60	Distant metastasis, NOS Stated as M1 [NOS] with no other information on distant metastasis	M1NOS	M1	D	D
99	Unknown; distant metastasis not stated Distant metastasis cannot be assessed Not documented in patient record	M0	*	U	U

* For CS Mets at DX code 00 and 99, the M category for AJCC 6 staging is determined by the CS Extension code as shown in the Extension Mets AJCC 6 Table for this schema.