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**: If information about named regional lymph nodes is available, use codes 110, 400, or 420 rather than code 600. **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**: Nodal metastasis is very rare in gastrointestinal stromal tumors and surgeons generally agree that nodal dissection is not indicated. In the absence of information on regional lymph node status, N0 is appropriate; code 999 is mapped to N0 accordingly.| Code | Description | AJCC 7 N | TNM 6 N | Summary Stage 1977 N | Summary Stage 2000 N |
|---|---|---|---|---|---|
| 000 | No regional lymph node involvement | N0 | NA | NONE | NONE |
| 050 | Nodule(s) in perigastric fat | N1 | NA | RN | RN |
| 100 | OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 000, 050, and 110 and CS Mets at DX codes 10 and 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 | NA | 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 | NA | RN | RN |
| 400 | Hepatic (excluding gastrohepatic, [see code 100] and hepatoduodenal [see code 420]) | N1 | NA | D | RN |
| 420 | For lesser curvature: Hepatoduodenal |
N1 | NA | D | D |
| 500 | Regional lymph node(s), NOS | N1 | NA | RN | RN |
| 600 | Stated as N1 with no other information on regional lymph node | N1 | NA | RN | RN |
| 650 | OBSOLETE DATA RETAINED V0200 Stated as N2, NOS |
ERROR: | NA | RN | RN |
| 700 | OBSOLETE DATA RETAINED V0200 Stated as N3, NOS |
ERROR: | NA | RN | RN |
| 800 | Lymph nodes, NOS | N1 | NA | RN | RN |
| 999 | Unknown; regional lymph nodes not stated Regional lymph node(s) cannot be assessed Not documented in patient record |
N0 | NA | U | U |