CS Lymph Nodes

Notes

**Note 1**: Code only regional nodes and nodes, NOS in this field. Distant nodes are coded in CS Mets at DX. **Note 2**: Nodal metastasis is very rare in gastrointestinal stromal tumors, and surgeons generally agree that nodal dissection is not indicated. In the absence of information on regional lymph node status, N0 is appropriate; code 999 is mapped to N0 accordingly.
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 node(s):
Intra-abdominal
Paracaval
Pelvic
Subdiaphragmatic
Regional lymph node(s), 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 node(s) cannot be assessed
Not documented in patient record
N0 NX U U