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 |