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**: This field includes all lymph nodes defined as Levels I-VI and Other by AJCC. The complete definitions are provided in the General Rules, Section 2 for head and neck cancers.| Code | Description | AJCC 7 N | TNM 6 N | Summary Stage 1977 N | Summary Stage 2000 N |
|---|---|---|---|---|---|
| 000 | No regional lymph node involvement | NA | NA | NONE | NONE |
| 100 | Regional lymph nodes Cervical for carotid body and parathyroid only Mediastinal for aortic body and thymus only |
NA | NA | RN | RN |
| 800 | Lymph nodes, NOS | NA | NA | RN | RN |
| 999 | Unknown; regional lymph nodes not stated Regional lymph nodes cannot be assessed Not documented in patient record |
NA | NA | U | U |