EOD Regional Nodes

Notes

**Note 1:** Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in EOD Mets. **Note 2:** Splenic lymph nodes and those located at the tail of the pancreas are not regional and should be coded in EOD Mets. **Note 3:** Regional lymph nodes include - Anterior to ampulla of Vater - Inferior to ampulla of Vater - Posterior to ampulla of Vater - Superior to ampulla of Vater - Celiac - Hepatic - Hepatic artery - Lateral aortic (lumbar) - Node of foramen of Winslow (epiploic) (omental) - Pancreaticoduodenal - Peripancreatic (excluding nodes at tail of pancreas) - Periportal (portal vein) - Proximal mesenteric - Pyloric (infrapyloric, subpyloric) - Retroperitoneal - Superior mesenteric **Note 4:** Code 800 if regional lymph nodes are involved, but there is no indication which ones are involved.
Code Description SS2018 N
000 No regional lymph node involvement NONE
300 1-3 positive regional lymph node(s) RN
400 4 or more positive regional lymph nodes RN
800 Regional lymph node(s), NOS Lymph node(s), NOS RN
999 Unknown; regional lymph node(s) not stated Regional lymph node(s) cannot be assessed Not documented in medical record Death Certificate Only U
(1) Fritz AG, Ries LAG (eds). **SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998)**, National Cancer Institute, NIH Pub. No. 98-2313, Bethesda, MD, 1998 (2) Young JL Jr, Roffers SD, Ries LAG, Fritz AG, Hurlbut AA (eds.). **SEER Summary Staging Manual-2000: Codes and Coding Instructions**, National Cancer Institute, NIH Pub. No. 01-4969, Bethesda, MD, 2001. (3) Collaborative Stage Work Group of the American Joint Committee on Cancer. **Collaborative Stage Data Collection System User Documentation and Coding Instructions, version 02.05**. American Joint Committee on Cancer (Chicago, IL) (4) Gress, D.M., Edge, S.B., Gershenwald, J.E., et al. **Principles of Cancer Staging**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017 (5) Herman, J.M., Pawlik, T.M., Vauthey, J.N., et al. **Ampulla of Vater**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017