CS Lymph Nodes

Notes

**Note**: Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in 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
Iliac, NOS:
External
Internal (hypogastric), NOS:
Obturator
Inguinal, NOS:
Deep inguinal, NOS
Node of Cloquet or Rosenmuller (highest deep inguinal)
Superficial inguinal (femoral)
Regional lymph node(s), NOS		 ERROR: N1 RN RN
150 SINGLE IPSILATERAL regional lymph node:
Iliac, NOS:
External
Internal (hypogastric), NOS:
Obturator
Inguinal, NOS:
Deep inguinal, NOS:
Node of Cloquet or Rosenmuller (highest deep inguinal)
Superficial inguinal (femoral)
Regional lymph node, NOS		 Lymph Nodes Size AJCC7 N1 RN RN
180 Stated as N1 with no other information on regional lymph nodes Lymph Nodes Size AJCC7 N1 RN RN
190 Stated as N2a with no other information on regional lymph nodes Lymph Nodes Size AJCC7 N1 RN RN
250 MULTIPLE IPSILATERAL regional lymph nodes listed in code 150 Lymph Nodes Size AJCC7 N1 RN RN
290 Stated as N2b with no other information on regional lymph nodes Lymph Nodes Size AJCC7 N1 RN RN
350 IPSILATERAL regional lymph nodes listed in code 150, not stated if single or multiple Lymph Nodes Size AJCC7 N1 RN RN
450 BILATERAL or CONTRALATERAL regional lymph node(s) listed in code 150 Lymph Nodes Size AJCC7 N1 RN RN
490 Stated as N2c with no other information on regional lymph nodes Lymph Nodes Size AJCC7 N1 RN RN
550 Regional lymph nodes listed in code 150,
Not stated if ipsilateral, bilateral or contralateral
AND not stated if single or multiple		 Lymph Nodes Size AJCC7 N1 RN RN
600 Stated as N2 [NOS] with no other information on regional lymph nodes Lymph Nodes Size AJCC7 N1 RN RN
700 Stated as N3 with no other information on regional lymph nodes Lymph Nodes Size AJCC7 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 NX U U
- For CS Lymph Nodes codes 150-700 ONLY, the N category for AJCC 7 staging is assigned based on the value of CS Site-Specific Factor 16, Size of Lymph Nodes, using the Lymph Nodes Size AJCC 7 Table for this schema.