Collaborative Stage Data Set - Revised 08/07/2013 FINAL
| Code | Description | TNM 7 Map | TNM 6 Map | SS77 Map | SS2000 Map |
| 000 | No regional lymph node involvement | N0 | N0 | NONE | NONE |
| 100 | OBSOLETE DATA RETAINED V0200 Regional lymph nodes Iliac, NOS: External Internal (hypogastric), NOS: Obturator Inguinal, NOS: Deep inguinal, NOS Node of Cloquet or Rosenmuller (highest deep inguinal) Superficial inguinal (femoral) Regional lymph node(s), NOS | ERROR | N1 | RN | RN |
| 150 | SINGLE IPSILATERAL regional lymph node: Iliac, NOS: External Internal (hypogastric), NOS: Obturator Inguinal, NOS: Deep inguinal, NOS: Node of Cloquet or Rosenmuller (highest deep inguinal) Superficial inguinal (femoral) Regional lymph node, NOS | ^ | N1 | RN | RN |
| 180 | Stated as N1 with no other information on regional lymph nodes | ^ | N1 | RN | RN |
| 190 | Stated as N2a with no other information on regional lymph nodes | ^ | N1 | RN | RN |
| 250 | MULTIPLE IPSILATERAL regional lymph nodes listed in code 150 | ^ | N1 | RN | RN |
| 290 | Stated as N2b with no other information on regional lymph nodes | ^ | N1 | RN | RN |
| 350 | IPSILATERAL regional lymph nodes listed in code 150, not stated if single or multiple | ^ | N1 | RN | RN |
| 450 | BILATERAL or CONTRALATERAL regional lymph node(s) listed in code 150 | ^ | N1 | RN | RN |
| 490 | Stated as N2c with no other information on regional lymph nodes | ^ | N1 | RN | RN |
| 550 | Regional lymph nodes listed in code 150, Not stated if ipsilateral, bilateral or contralateral AND not stated if single or multiple | ^ | N1 | RN | RN |
| 600 | Stated as N2 [NOS] with no other information on regional lymph nodes | ^ | N1 | RN | RN |
| 700 | Stated as N3 with no other information on regional lymph nodes | ^ | 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 | NX | NX | U | U |