EOD Primary Tumor

Code Description SS2018 T
000 In situ, intraepithelial, noninvasive IS
100 Invasive tumor confined to - Lamina propria - Mucosa, NOS - Submucosa (superficial invasion) L
200 Muscularis propria (layer) L
300 Confined to gallbladder, NOS Localized, NOS L
400 Perimuscular connective tissue (peritoneal side) - WITHOUT involvement of serosa (visceral peritoneum) Peritoneal side of gallbladder RE
450 Perimuscular connective tissue (hepatic side) - WITH no extension into liver Hepatic side of gallbladder RE
500 Perimuscular tissue, NOS - UNKNOWN if liver involved RE
550 Ampulla of Vater Branch(es) of hepatic artery (right or left) Branch(es) of portal vein (right or left) Duodenum Extrahepatic bile duct(s) Liver, less than or equal to 2 cm OR distance not stated Omentum (greater, lesser, NOS) Pancreas Serosa (visceral peritoneum) Small intestine, NOS RE
600 Abdominal wall Colon Cystic artery/vein Diaphragm Liver, greater than 2 cm Stomach D
700 Hepatic artery (common, NOS) Portal vein (main, NOS) Two or more extrahepatic organs or structures Further contiguous extension D
800 No evidence of primary tumor U
999 Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient 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: 3-30 (5) Zhu, A.X., Pawlik, T.M., Vauthey, J.N., et al. **Gallbladder**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 303-309