Collaborative Stage

Note 1: Regional lymph nodes are defined as those in the vicinity of the primary tumor. Code only regional nodes and nodes, NOS in this field. Distant nodes are coded in CS Mets at DX.
Note 2: Federation Internationale de Gynecologie at d-Obstetrique (FIGO) Stage IIIC is assigned based on tumor extension and/or regional lymph node involvement. Code CS Lymph Nodes based on a physician's statement of FIGO Stage IIIC only if it is known that the stage value is assigned because of lymph node involvement. Note 3: Regional lymph node involvement is rare. For this schema, if there is no mention of lymph node involvement clinically, assume that lymph nodes are negative (code 000). Use code 999 only when there is no available information on the extent of the patient's disease, for example, when a lab-only case is abstracted from a biopsy report and no clinical history is available.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	No regional lymph node involvement	N0	N0	NONE	NONE
100	Regional lymph nodes: Intra-abdominal Para-aortic Pelvic Subdiaphragmatic Iliac: Common iliac External iliac Internal iliac (hypogastric): Obturator Inguinal Retroperitoneal, NOS Regional lymph nodes, NOS	N1	N1	RN	RN
150	FIGO IIIC based on regional lymph node involvement	N1	N1	RN	RN
800	Lymph nodes, NOS	N1	N1	RN	RN
999	Unknown; regional lymph nodes not stated Regional lymph nodes cannot be assessed Not document in patient record (See Note 2)	NX	NX	U	U

CS Lymph Nodes