EOD Primary Tumor

Code Description SS2018 T
000 In situ, intraepithelial, noninvasive IS
100 Tumor less than or equal to 1 cm AND confined to - Intramucosal, NOS - Lamina propria (including in a polyp) - Mucosa, NOS - Muscularis mucosae (including in a polyp) - Submucosa (superficial invasion) (including in a polyp) Localized, NOS L
200 Tumor greater than 1 cm OR Invades muscularis propria Invasion of muscularis, NOS L
300 Invasion through muscularis propria Extension through wall, NOS Subserosal tissue/(sub)serosal fat invaded Transmural, NOS Wall, NOS L
500 Adjacent (connective) tissue(s), NOS (without serosal penetration) Fat, NOS Mesenteric fat Mesentery (adjacent loops of bowel) Nonperitonealized perimuscular tissue Retroperitoneum RE
600 Invasion of/through serosa (mesothelium) (tunica serosa) (visceral peritoneum) Abdominal wall Colon (including appendix) Other segments of the small intestine via serosa Retroperitoneum invaded greater than 2cm in depth RE
700 Bladder Fallopian tube(s) Ovary(ies) Uterus 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) Woltering, E.A., Bergsland, E.K., et al. **Neuroendocrine Tumors of the Jejunum and Ileum**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 375-387