Collaborative Stage

Note 1: For this site, code all lymph node (regional and distant) involvement in CS Lymph Nodes field. Only visceral involvement is coded in CS Mets at DX. Bone marrow and peripheral blood involvement is coded in CS Site-Specific Factor 1.
Note 2: Visceral involvement is considered metastatic and should be questioned in the absence of node or blood involvement.
Note 3: For visceral disease (Stage IVB), documentation of involvement by only one organ outside the skin, nodes, or blood is needed.
Note 4: Visceral involvement must be pathologically confirmed, except for the liver and spleen, which may be documented with imaging (code 60). If liver or spleen is involved clinically without imagines, use code 05.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
00	No visceral organ involvement	M0	M0	NONE	NONE
05	Clinical confirmation only of visceral (non-cutaneous, extra nodal) involvement (Except for liver and spleen imaging, see code 10)	M0	M1	NONE	NONE
10	Imaging confirmation of liver and/or spleen metastasis	M1	M1	D	D
40	OBSOLETE DATA RETAINED V0200 Visceral (non-cutaneous, extra nodal) involvement: Carcinomatosis Distant metastasis, NOS MFCG Stage IV	ERROR	M1	D	D
45	Visceral (non-cutaneous, extranodal) involvement, pathologically confirmed: Involvement by at least one organ outside the skin, nodes, blood, or bone marrow	M1	M1	D	D
60	Carcinomatosis, unknown if clinical or pathological confirmation	M0	M1	D	D
70	Distant metastasis, NOS Stated as M1 with no other information on distant metastasis	M1	M1	D	D
99	Unknown; distant metastasis not stated Distant metastasis cannot be assessed Not documented in patient record	M0	MX	U	U

CS Mets at DX