Collaborative Stage

Collaborative Stage for TNM 7 - Revised 09/28/2009 [ Schema ]

BileDuctsPerihilar

CS Lymph Nodes

Note 1: Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in the field Mets at DX.
Note 2: Para-aortic and pericaval lymph nodes were considered M1 in AJCC 6th ed.
Note 3: In some cases, determination of the M category for TNM 6 is based on this field as well as CS Mets at DX.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	No regional lymph node involvement	N0	N0	NONE	NONE
150	Regional lymph nodes: Cystic duct (node of the neck of the gallbladder) (Calot's node) Hepatic Hilar (in the hepatoduodenal ligament) Node of the foramen of Winslow (omental) (epiploic) Pancreaticoduodenal Pericholedochal (node around common bile duct) Periduodenal Peripancreatic (near head of pancreas only) Periportal Porta hepatis (portal) (hilar) (in hilus of liver) Regional lymph nodes, NOS	N1	N1	RN	RN
200	Stated as N1 [NOS] with no other information on lymph nodes	N1	N1	RN	RN
350	Regional lymph nodes: Celiac Superior mesenteric	N2	N1	D	D
400	Regional lymph nodes: Para-aortic Pericaval	N2	*	D	D
450	(400) + (150) OR (350) Any regional lymph node(s) as listed in code 150 or 350 + para-aortic and/or pericaval lymph node(s)	N2	*	D	D
750	Stated as N2 [NOS] with no other information on lymph nodes	N2	N1	D	D
800	Lymph nodes, NOS	N1	N1	RN	RN
999	Unknown; not stated Regional lymph node(s) cannot be assessed Not documented in patient record	NX	NX	U	U

* When CS Lymph Nodes is coded 400 or 450, the 6th Edition N and M categories are determined by the code in CS Mets at Dx using the Lymph Nodes Mets at DX Table.