Collaborative Stage for TNM 7 - Revised 10/31/2010 [ Schema ]
| Code | Description | TNM 7 Map | TNM 6 Map | SS77 Map | SS2000 Map | 
| 000 | No regional lymph node involvement | N0 | N0 | NONE | NONE | 
| 100 | Regional lymph node(s) Cervical, NOS Facial, NOS : Buccinator (buccal) Nasolabial Submental Submandibular (submaxillary) Parotid, NOS: Infra-auricular Preauricular Regional lymph node(s), NOS  | N1 | N1 | RN | RN | 
| 120 | Regional lymph node(s): Supraclavicular, NOS  | N1 | N1 | D | D | 
| 125 | 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  | NX | NX | U | U |