EOD Primary Tumor

Notes

**Note:** When both the Federation Internationale de Gynecologie et d'Obstetrique (FIGO) stage and extension information on the primary tumor are available, use the extension information to code primary tumor in preference to a statement of FIGO stage.
Code Description SS2018 T
100 Confined to endometrium (stromal) FIGO Stage IA Peritoneal Cytology with Primary Tumor for SS2018 T
125 Confined to endometrium or endocervix (glandular, or glandular and stromal) RE
150 Tumor invades less than one-half of myometrium Invasion of inner half of myometrium FIGO Stage IB Peritoneal Cytology with Primary Tumor for SS2018 T
175 Invasion of less than one-half of myometrium WITH involvement of endocervix RE
200 Tumor invades one-half or more of myometrium Invasion of outer half of myometrium FIGO Stage IC Peritoneal Cytology with Primary Tumor for SS2018 T
250 Invasion of one-half or more of myometrium WITH involvement of endocervix RE
300 Invasive cancer confined to corpus uteri Invasion of myometrium, NOS Tunica serosa of visceral peritoneum (serosa covering the corpus) Localized, NOS FIGO Stage I [NOS] Peritoneal Cytology with Primary Tumor for SS2018 T
350 Invasion of myometrium, NOS WITH involvement of endocervix Cervix uteri, NOS, but not beyond uterus RE
400 Extension or metastasis within true pelvis - Adnexa, NOS + Fallopian tube(s) + Ligaments (broad, round, uterosacral) + Ovary(ies) - Parametrium - Visceral peritoneum of pelvic organs excluding serosa of corpus uteri FIGO Stage IIA RE
450 Parietal serosa of pelvic cavity Pelvic wall(s) Ureter Vagina Vulva Described clinically as "frozen pelvis", NOS FIGO Stage IIB RE
500 Extension beyond uterus, within pelvis, NOS FIGO Stage II [NOS] RE
550 Infiltration of abdominal tissues, one of the following sites - Abdominal serosa (visceral or parietal peritoneum of abdomen) - Sigmoid colon - Small intestine - Other abdominal structures FIGO Stage IIIA D
600 Infiltration of abdominal tissues (see code 550), more than one site FIGO Stage IIIB D
650 Abdominal tissues involvement, NOS Further contiguous extension FIGO Stage III [NOS] D
700 Bladder wall Bladder, NOS excluding mucosa Bowel wall Rectal wall Rectum, NOS excluding mucosa RE
750 Invasion of organs in code 700 plus infiltration of any abdominal tissues Extension to bowel mucosa or bladder (excluding bullous edema) Cul de sac FIGO Stage IVA, IV [NOS] 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) (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 (5) **Introduction to Female Reproductive Organs**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017 (6) Dizon, D.S., Olawaiye, A.B., Mutch, D.G., et al. **Corpus Uteri - Sarcoma**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017