Collaborative Stage

Note 1: Code only regional nodes and nodes, NOS, in this field. Regional nodes include bilateral and contralateral involvement of named nodes. Distant nodes, including presacral and lateral sacral (laterosacral) nodes, are coded in CS Mets at DX.
Note 2: The Federation Internationale de Gynecologie et 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 if the stage value is assigned because of regional lymph node involvement or there is no indication of the basis.
Note 3: If either exploratory or definitive surgery is done with no mention of lymph nodes, assume nodes are negative.
Note 4: If the clinician says "adnexa palpated" but does not mention lymph nodes, assume lymph nodes are not involved.
Note 5: Determination of the N category for AJCC 6 is based on this field and CS Mets at DX for specific codes in CS Mets at DX.

* For CS Lymph Nodes codes 000 and 999, the N category for AJCC 6 staging is based on the value of CS Mets at DX as shown in the Lymph Nodes Mets at DX AJCC 6 Table.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	No regional lymph node involvement	N0	*	NONE	NONE
100	Regional lymph node(s): Iliac, NOS: Common External Internal (hypogastric) Obturator Pelvic, NOS	N1	N1	RN	RN
120	OBSOLETE DATA RETAINED V0200 Regional lymph node(s): Lateral sacral (laterosacral) Presacral	ERROR	N1	D	RN
200	Regional lymph node(s): Aortic, NOS: Lateral (lumbar) Para-aortic Periaortic Retroperitoneal, NOS	N1	N1	RN	RN
220	OBSOLETE DATA RETAINED V0200 200 + 120	ERROR	N1	D	RN
300	Regional lymph node(s): Inguinal	N1	N1	D	RN
500	Regional lymph node(s), NOS	N1	N1	RN	RN
550	FIGO Stage 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 node(s) cannot be assessed Not documented in patient record	NX	*	U	U

CS Lymph Nodes