EOD Primary Tumor

Code	Description	SS2018 T
000	In situ: Noninvasive; intraepithelial	IS
100	Confined to tissue or organ of origin Localized, NOS	L
200	Corpus uteri Fallopian tube for ligaments Mesosalpinx, ipsilateral Ovary, ipsilateral Peritoneum Uterus, NOS	RE
700	Cervix uteri Cul de sac (rectouterine pouch) Omentum Ovary, contralateral Rectosigmoid Sigmoid Small intestine Further contiguous extension	D
800	No evidence of primary tumor	U
999	Unknown; extension not stated Primary tumor cannot be assessed Not documented in medical 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)