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