EOD Mets

Notes

**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) - Colon + Iliac (common, external, hypogastric, internal, obturator, NOS) + Inferior mesenteric (cecum, ascending colon, hepatic flexure, transverse colon) + Para-aortic + Retroperitoneal + Superior mesenteric - Rectosigmoid + Hemorrhoidal, inferior (rectosigmoid) + Iliac (common, external, hypogastric, internal, obturator) + Rectal, inferior + Superior mesenteric - Rectum + Colic (left) (rectum) + Iliac (common, external, NOS) + Superior mesenteric - Distant lymph node(s), NOS	D
30	At least one extrahepatic site - Bone - Lung - Ovary(ies) - Peritoneal nodule(s) - Peritoneum (seeding) Other specified distant metastasis (excluding 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) Shi, C., Woltering, E.A., Washington, M.K., et al. **Neuroendocrine Tumors of the Colon and Rectum**. 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 Colon and Rectum**, from the AJCC Cancer Staging System Version 9 (2023). Used with permission of the American College of Surgeons, Chicago, Illinois.