CS Mets at DX

Notes

**Note**: Peridiaphragmatic nodes are considered regional nodes in AJCC 7 staging and are coded in CS Lymph Nodes.

Code	Description	AJCC 7 M	AJCC 6 M	Summary Stage 1977 M	Summary Stage 2000 M
00	No distant metastasis	M0	Lymph Nodes Mets at DX AJCC6	NONE	NONE
10	Distant lymph node(s), including cervical nodes	M1	M1	D	D
35	Direct extension to contralateral lung	M1	M1	D	D
40	Distant metastases, except code 10 or 35 Discontinuous involvement of contralateral pleura/chest wall Carcinomatosis	M1	M1	D	D
50	(35 and/or 40) + 10 Distant metastasis plus distant lymph node(s)	M1	M1	D	D
60	Distant metastases, 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	Lymph Nodes Mets at DX AJCC6	U	U

- For CS Mets at DX codes 00 and 99, the assignment of the M category for AJCC 6 staging is based on the value of CS Lymph Nodes as shown in the Lymph Nodes Mets at DX AJCC 6 Table for this schema.