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**: Hepatoduodenal nodes are regional for primaries of the lesser curvature of the stomach. They are coded in CS Mets at DX for all other subsites in this schema. **Note 3**: If information about named regional lymph nodes is available, use codes 110, 400, or 420 rather than code 500 or 600.
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
050 Nodule(s) in perigastric fat N1 Determine Correct Table for AJCC 6 N RN RN
100 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 000, 050, 110, CS Mets at DX codes 10, 50

Regional lymph nodes:
Left gastric (superior gastric), NOS:
Cardial
Cardioesophageal
Gastric, left
Gastropancreatic, left
Lesser curvature
Lesser omental
Paracardial
Pancreaticosplenic (pancreaticolienal)
Pancreatoduodenal
Perigastric, NOS
Peripancreatic
Right gastric (inferior gastric), NOS:
Gastrocolic
Gastroduodenal
Gastroepiploic (gastro-omental), right or NOS
Gastrohepatic
Greater curvature
Greater omental
Pyloric, NOS
Infrapyloric (subpyloric)
Suprapyloric
Splenic (lienal), NOS:
Gastroepiploic (gastro-omental), left
Splenic hilar
Superior mesenteric
Nodule(s) in perigastric fat		 N1 Determine Correct Table for AJCC 6 N RN RN
110 Regional lymph nodes:
Left gastric (superior gastric), NOS:
Cardial
Cardioesophageal
Gastric, left
Gastropancreatic, left
Lesser curvature
Lesser omental
Paracardial
Pancreaticosplenic (pancreaticolienal)
Pancreatoduodenal
Perigastric, NOS
Peripancreatic
Right gastric (inferior gastric), NOS:
Gastrocolic
Gastroduodenal
Gastroepiploic (gastro-omental), right or NOS
Gastrohepatic
Greater curvature
Greater omental
Pyloric, NOS
Infrapyloric (subpyloric)
Suprapyloric
Splenic (lienal), NOS:
Gastroepiploic (gastro-omental), left
Splenic hilar		 N1 Determine Correct Table for AJCC 6 N RN RN
400 Celiac
Hepatic (excluding gastrohepatic, [see code 100] and hepatoduodenal [see code 420])		 N1 Determine Correct Table for AJCC 6 N D RN
420 For lesser curvature only:
Hepatoduodenal		 N1 Determine Correct Table for AJCC 6 N D D
500 Regional lymph nodes, NOS N1 Determine Correct Table for AJCC 6 N RN RN
600 Stated as N1 with no other information on regional lymph nodes N1 N1 RN RN
650 OBSOLETE DATA RETAINED V0200

Stated as N2, NOS		 ERROR: N2 RN RN
700 OBSOLETE DATA RETAINED V0200

Stated as N3, NOS		 ERROR: N3 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 NX U U
- For CS Lymph Nodes codes 050-500 and 800 ONLY, when CS Lymph Nodes Eval is 0, 1, 5, or 9, the N category is assigned as shown in the Lymph Nodes Clinical Evaluation Table, using Regional Nodes Positive and CS Site-Specific Factor 1; when CS Lymph Nodes Eval is 2, 3, 6, 8, or not coded, the N category is assigned as shown in the Lymph Nodes Pathologic Evaluation Table Also Used When CS Reg Nodes Eval Is Not Coded using Regional Nodes Positive.