CS Lymph Nodes

Notes

**Note 1**: Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in the field CS Mets at DX. **Note 2**: Regional nodes include bilateral and contralateral involvement of named nodes. **Note 3**: In some cases, determination of the N category for TNM 6 is based on this field and CS Mets at DX.

Code	Description	AJCC 7 N	TNM 6 N	Summary Stage 1977 N	Summary Stage 2000 N
000	No regional lymph node involvement	N0	N0	NONE	NONE
100	OBSOLETE DATA RETAINED V0200 Regional lymph nodes (including contralateral or bilateral nodes): Perivesical Iliac: Internal (hypogastric) Obturator External Iliac, NOS Sacral (lateral, presacral, sacral promontory (Gerota's), or NOS) Pelvic, NOS Regional lymph node(s), NOS Single regional lymph node less than or equal to 2 cm	ERROR:	N1	RN	RN
150	SINGLE regional lymph node: Perivesical Iliac: Internal (hypogastric) Obturator External Iliac, NOS Sacral (lateral, presacral, sacral promontory (Gerota's), or NOS) Pelvic, NOS Regional lymph node, NOS Stated as N1 with no other information on regional lymph nodes	N1	Determine Correct Table for AJCC 6 N	RN	RN
200	OBSOLETE DATA RETAINED V0200 Single regional lymph node greater than 2 cm and less than or equal to 5 cm OR multiple regional nodes, none greater than 5 cm	ERROR:	N2	RN	RN
250	MULTIPLE regional lymph nodes: Perivesical Iliac: Internal (hypogastric) Obturator External Iliac, NOS Sacral (lateral, presacral, sacral promontory (Gerota's), or NOS) Pelvic, NOS Regional lymph nodes, NOS Stated as N2 with no other information on regional lymph nodes	N2	Determine Correct Table for AJCC 6 N	RN	RN
300	OBSOLETE DATA RETAINED V0200 Regional lymph node(s), at least one greater than 5 cm	ERROR:	N3	RN	RN
350	Common iliac lymph node(s) Stated as N3 with no other information on regional lymph nodes	N3	Determine Correct Table for AJCC 6 N	D	D
400	350 + 150 Common iliac lymph node(s) plus single regional lymph node as listed in code 150	N3	Determine Correct Table for AJCC 6 N	D	D
450	350 + 250 Common iliac lymph node(s) plus multiple regional lymph nodes as listed in code 250	N3	Determine Correct Table for AJCC 6 N	D	D
500	OBSOLETE DATA RETAINED V0200 Regional lymph node(s), NOS (size and/or number not stated)	ERROR:	N1	RN	RN
505	Regional lymph node(s), NOS Not stated if single or multiple	N1	Determine Correct Table for AJCC 6 N	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 CS Lymph Nodes codes 150, 250, 350-450, and 505 ONLY, the N and M categories for AJCC 6 staging are assigned based on CS Lymph Nodes, CS Mets at DX, and CS Site-Specific Factor 2, Size of Metastasis in Lymph Nodes, as shown in the Lymph Nodes Size Mets 00 AJCC 6 Table, Lymph Nodes Size Mets 99 AJCC 6 Table, Lymph Nodes Size Mets 11, 40, 55, 60 AJCC 6 Table, and Lymph Nodes Size Mets 10 or 50 AJCC 6 Table.