EOD Primary Tumor

Code Description SS2018 T
000 In situ, intraepithelial, noninvasive (Adeno) carcinoma, noninvasive, in a polyp or adenoma IS
050 Low-grade appendiceal mucinous neoplasm confined by the muscularis propria (LAMN) Acellular mucin or mucinous epithelium may invade into muscularis propria IS
070 Lamina propria Mucosa (intramucosal, NOS) Muscularis mucosae L
100 Submucosa Confined to appendix, NOS Confined to polyp, NOS Localized, NOS L
200 Muscularis propria L
300 Extension through wall, NOS Invasion through muscularis propria Non-peritonealized pericolic tissues invaded Perimuscular tissue invaded Subserosa Transmural, NOS Wall, NOS L
400 Adjacent tissue(s), NOS Connective tissue Fat, NOS Mesenteric fat Mesentery Mesoappendix Pericolic fat RE
500 Invasion of/through serosa (mesothelium) (visceral peritoneum) RE
600 For mucinous tumor only - Peritoneal involvement confined within right lower quadrant + WITH or WITHOUT further local extension D
700 Abdominal wall Adherent to other organs or structures Greater omentum Retroperitoneum (excluding fat) Small intestine Tumor found in adhesion(s) if microscopic examination performed RE
750 Adrenal (suprarenal) gland Bladder Diaphragm Fallopian tube Fistula to skin Gallbladder Kidney Liver Other segment(s) of colon/rectum via serosa Ovary Ureter 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) Overman, M.J., Jessup, J.M., et al. **Appendix - Carcinoma**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 237-250