Collaborative Stage

Collaborative Stage for TNM 7 - Revised 12/29/2009 [ Schema ]

BileDuctsIntraHepat

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: Inferior phrenic nodes were reclassified from distant to regional nodes in AJCC 7th ed. They are now coded in CS Lymph Nodes.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	None; no regional lymph node involvement	N0	N0	NONE	NONE
100	Regional lymph nodes: Hepatic NOS: Hepatic artery Hepatic pedicle Inferior vena cava Porta hepatis (hilar) [in hilus of liver] Hepatoduodenal ligament Periportal Portal vein Regional lymph node(s), NOS	N1	N1	RN	RN
200	Inferior phrenic nodes	N1	*	D	D
300	(100) + (200)	N1	*	D	D
500	Stated as N1 [NOS]	N1	N1	RN	RN
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

* For codes 200 and 300 the N and M categories for AJCC 6th Edition are assigned based on the coding of this field and CS Mets at DX as shown in the TNM 6 Intrahepatic extra table LN Mets.