EOD Mets


**Note 1:** Use code 50 only when there are liver metastasis WITH other metastatic involvement. * If there are multiple distant mets but liver is not one of them, code 30. **Note 2:** Use code 70 when the only information is “distant metastasis, NOS,” and there is no documentation regarding the specific metastases. * If there are specific metastasis documented that are not listed in codes 10, 20, or 30, assign code 30 for “other specified distant metastasis.”
Code Description SS2018 M
00 No distant metastasis Unknown if distant metastasis NONE
10 Liver (including liver parenchymal nodule(s)) D
20 Distant lymph node(s) - Hepatoduodenal (all subsites EXCEPT lesser curvature) - Intra-abdominal - Mesenteric (inferior, superior, NOS) - Middle colic - Pancreaticoduodenal (all subsites EXCEPT greater curvature) - Para-aortic - Porta hepatic (portal) (hilar) (in hilus of liver) - Retropancreatic - Retroperitoneal - Distant lymph node(s), NOS D
30 At least one extrahepatic site - Bone - Lung - Ovary(ies) - Peritoneum Other specified distant metastasis (except liver) Carcinomatosis WITH or WITHOUT distant lymph node(s) D
50 Liver WITH other distant metastasis (10) + (20 or 30) D
70 Distant metastasis, NOS D
99 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) Woltering, E.A., Bergsland, E.K., et al. **Neuroendocrine Tumors of the Stomach**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017 (6) **Neuroendocrine Tumors of the Stomach,** from the AJCC Cancer Staging System Version 9 (2023). Used with permission of the American College of Surgeons, Chicago, Illinois.