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**: Splenic lymph nodes and those located at the tail of the pancreas are not considered regional and should be coded under CS Mets at DX.| 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 nodes: Hepatic Hepatic artery Node of the foramen of Winslow (epiploic) (omental) Pancreaticoduodenal Peripancreatic (except at tail of pancreas, see CS Mets at DX) Periportal Lymph nodes: Anterior to the ampulla of Vater Inferior to the ampulla of Vater Posterior to the ampulla of Vater Superior to the ampulla of Vater Regional lymph node(s), NOS Stated as N1 with no other information on regional lymph nodes |
N1 | N1 | RN | RN |
| 110 | Regional lymph nodes: Celiac Infrapyloric (subpyloric) Lateral aortic (lumbar) Proximal mesenteric Retroperitoneal Superior mesenteric |
N1 | N1 | D | 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 |