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**: Pericholedochal (nodes of the common bile duct), superior mesenteric, and pyloric nodes are classified as distant for AJCC 7 staging. They are coded in CS Mets at DX. **Note 3**: The specific location of the mesenteric nodes determines whether they are regional or distant. If the specific location is not described, code 800, Lymph Nodes, NOS. **Note 4**: Porta hepatic nodes are considered distant for Body and Tail and should be coded in CS Mets at DX, code 10. If the specific location for hepatic nodes is not described, code 110, Regional Lymph nodes - Hepatic in CS Lymph Nodes.

Code	Description	AJCC 7 N	TNM 6 N	Summary Stage 1977 N	Summary Stage 2000 N
000	No regional lymph node involvement	N0	Lymph Nodes Mets at DX AJCC6	NONE	NONE
100	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 000 and 110 and CS Mets at DX code 07, 20, and 45 Regional lymph node(s): Hepatic Lateral aortic (lumbar) Pancreaticosplenic (pancreaticolienal) Peripancreatic, NOS: Anterior, NOS: Anterior pancreaticoduodenal Anterior proximal mesenteric Pyloric Inferior to the head and body of pancreas Posterior, NOS: Pericholedochal (common bile duct) Posterior pancreaticoduodenal Posterior proximal mesentery Superior to the head and body of pancreas Retroperitoneal Splenic (lienal) Gastroepiploic Splenic hilum Suprapancreatic Superior mesenteric Regional lymph node(s), NOS Stated as N1, NOS	N1	N1	RN	RN
110	Regional lymph node(s): Hepatic Lateral aortic (lumbar) Pancreaticosplenic (pancreaticolienal) Peripancreatic, NOS: Anterior, NOS: Anterior pancreaticoduodenal Anterior proximal mesenteric Inferior to the head and body of pancreas Posterior, NOS: Posterior pancreaticoduodenal Posterior proximal mesentery Superior to the head and body of pancreas Retroperitoneal Splenic (lienal): Gastroepiploic (gastro-omental), left Splenic artery Splenic hilum Suprapancreatic Regional lymph node(s), NOS	N1	N1	RN	RN
200	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 000, 110, and 210 and CS Mets at DX codes 07, 20, and 45 Regional lymph node(s): Celiac Infrapyloric (subpyloric)	N1	N1	D	D
210	Regional lymph node(s): Celiac	N1	N1	D	D
250	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 node(s) cannot be assessed Not documented in patient record	NX	Lymph Nodes Mets at DX AJCC6	U	U

- For CS Lymph Nodes codes 000 and 999, the N category for AJCC 6 staging is based on the value of CS Mets at DX as shown in the Lymph Nodes Mets at DX AJCC 6 Table for this schema.