EOD Mets

Code	Description	SS2018 M
00	No distant metastasis Unknown if distant metastasis	NONE
10	Liver	D
20	Bone Lung Ovary(ies) Peritoneum	D
30	Distant lymph node(s), including - 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 Distant lymph node(s) WITH or WITHOUT structures in Code 20	D
50	Codes 20 + 30 Carcinomatosis Distant metastasis WITH or WITHOUT distant lymph node(s), NOS	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: 3-30 (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: 351-359