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**: Celiac axis and splenic nodes are classified as distant nodes for AJCC 7 staging and are coded in 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	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 codes 05, 07, 20, and 45 Regional lymph nodes: Celiac Gastroepiploic (gastro-omental), left Hepatic Infrapyloric (subpyloric) Lateral aortic (lumbar) 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 Superior mesenteric Regional lymph node(s), NOS	N1	N1	RN	RN
110	Regional lymph nodes: Hepatic Lateral aortic (lumbar) 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 Pyloric: Infrapyloric Retropyloric Suprapyloric Subpyloric Retroperitoneal Superior mesenteric Regional lymph node(s), NOS	N1	N1	RN	RN
200	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 000 and 110 and CS Mets at DX codes 07, 20, 45 Pancreaticosplenic (pancreaticolienal) Splenic (lienal), NOS Superior hilum Suprapancreatic	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 nodes 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 CS Lymph Nodes Mets at DX AJCC 6 Table for this schema.