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**: Regional nodes include bilateral and contralateral involvement of named nodes. **Note 3**: Determine the size of the largest metastasis in a lymph node as documented in the pathology report to assign codes 100-300, not the size of the lymph node itself. If the size of the metastasis is not documented, determine the size of the largest involved lymph node as documented pathologically or clinically with pathology taking priority. Do not code the size of any node(s) coded in CS Mets at DX. **Note 4**: The assignment of the N category is based both on number and size of metastasis. Use codes as described here if the number and/or size of nodes involved is unknown: * Code 110: Single node involved, size not stated. * Code 210: Multiple nodes involved, size not stated. * Code 200: Single or multiple nodes not stated, size stated and greater than 2 cm but less than or equal to 5 cm. * Code 300: Single or multiple nodes not stated, size stated and greater than 5 cm. * Code 505: Single or multiple nodes not stated, size not stated.| 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 | SINGLE regional lymph node, less than or equal to 2 cm: Iliac, NOS: Common External Internal (hypogastric), NOS: Obturator Inguinal, NOS: Deep inguinal, NOS Node of Cloquet or Rosenmuller (highest deep inguinal) Superficial (femoral) Pelvic, NOS Sacral, NOS Presacral Regional lymph node, NOS Stated as N1 with no other information on regional lymph nodes |
N1 | N1 | RN | RN |
| 110 | SINGLE regional node listed in code 100, size not stated | N1 | N1 | RN | RN |
| 200 | SINGLE regional lymph node listed in code 100, greater than 2 cm but less than or equal to 5 cm OR MULTIPLE regional nodes listed in code 100, none greater than 5 cm |
N2 | N2 | RN | RN |
| 210 | MULTIPLE regional nodes listed in code 100, size not stated | N2 | N2 | RN | RN |
| 300 | Regional lymph node(s) listed in code 100, at least one greater than 5 cm | N2 | N2 | RN | RN |
| 400 | Stated as N2 with no other information on regional lymph nodes | N2 | N2 | RN | RN |
| 500 | OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 110, 200, 210, 300, and 505 Regional lymph node(s), NOS (size and/or number not stated) |
N1 | N1 | RN | RN |
| 505 | Regional lymph node(s), NOS: Size and/or number not stated (See Note 4 for exceptions) |
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 |