CS Lymph Nodes

This input is used for staging

Notes

**Note 1**: Code only regional nodes and nodes, NOS in this field. Distant nodes are coded in CS Mets at DX. **Note 2**: Metastatic nodules in the fat adjacent to a gastric carcinoma, without evidence of residual lymph node tissue, are considered regional node metastases, but nodules implanted on peritoneal surfaces are considered distant metastases. **Note 3**: 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 4**: The number of positive regional nodes is required to calculate the correct N category for this schema. Use codes 610-750 when the pathology report assigns an N1, N2, or N3 category but does not specify the number of nodes involved, or the record identifies an N1, N2, or N3 category but the specific information about number of nodes involved is not available. Use codes 110-500 when information about the number of positive nodes is available, or when nodes are clinically positive but not removed for examination.

Default

999

NAACCR Item

NAACCR #2830
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 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 000, 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
Determine Correct Table for AJCC 7 N 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)
Pancreaticoduodenal
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
Nodule(s) in perigastric fat
Determine Correct Table for AJCC 7 N Determine Correct Table for AJCC 6 N RN RN
400 Celiac
Hepatic [excluding gastrohepatic (see code 110), and hepatoduodenal (see code 420)]
Determine Correct Table for AJCC 7 N Determine Correct Table for AJCC 6 N D RN
420 For lesser curvature:
Hepatoduodenal
Determine Correct Table for AJCC 7 N Determine Correct Table for AJCC 6 N D D
500 Regional lymph node(s), NOS Determine Correct Table for AJCC 7 N Determine Correct Table for AJCC 6 N RN RN
600 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 500, 610, CS Site-Specific Factor 1 code 100

Stated as N1 with no other information on regional lymph nodes
N1 N1 RN RN
610 Stated as pathologic N1 with no other information on regional lymph nodes N1 N1 D RN
650 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 500, 660, CS Site-Specific Factor 1 code 200

Stated as N2 with no other information on regional lymph nodes
N2 N2 RN RN
660 Stated as pathologic N2 with no other information on regional lymph nodes N2 N1 RN RN
700 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 500, 750, CS Site-Specific Factor 1 code 300

Stated as N3 [NOS] with no other information on regional lymph nodes
N3NOS N2 RN RN
710 Stated as pathologic N3a with no other information on regional lymph nodes N3a N2 RN RN
720 Stated as pathologic N3b with no other information on regional lymph nodes N3b N3 RN RN
750 Stated as pathologic N3 [NOS] with no other information on regional lymph nodes N3NOS N2 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 NX U U
- For CS Lymph Nodes codes 100-500, when CS Lymph Nodes Eval is 1or 9 and CS Coding System Original is before CS v02.05, the N category is assigned from the Lymph Nodes Clinical Eval Prior to V02.05 7th Table using Regional Nodes Positive and CS Site-Specific Factor 1. When CS Lymph Nodes Eval = 0, 5 OR (CS Lymph Nodes Eval is 1,9 and CS Coding System Original is at least V02.05), the N category is assigned from Lymph Nodes Clinical Eval V02.05 AJCC 7 Table using CS Site-Specific Factor 1. When CS Lymph Nodes Eval is 2, 3, 6, 8, or not coded, the N category is determined from the Lymph Nodes Pathologic Evaluation AJCC 7 Table Also Used When CS Reg Nodes Eval Is Not Coded using Regional Nodes Positive. - For CS Lymph Nodes codes 100-500, when CS Lymph Nodes Eval is 0, 1, 5 or 9, the N category is assigned from the Lymph Nodes Clinical Evaluation AJCC 6 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 determined from the Lymph Nodes Pathologic Evaluation AJCC 6 Table Also Used When CS Reg Nodes Eval Is Not Coded using Regional Nodes Positive.