CS Lymph Nodes

Notes

**Note 1**: Code only regional nodes and nodes, NOS in this fields. Distant nodes are coded in CS Mets at DX. **Note 2**: Regional lymph nodes are defined as those in the vicinity of the primary tumor. **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. Use code 999 (Unknown) 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 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 Regional lymph nodes:
Intra-abdominal
Paracaval
Pelvic
Subdiaphragmatic
Regional lymph nodes, NOS

Stated as N1 with no other information on regional lymph nodes
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 documented in patient record
(See Note 3)
NX NX U U