EOD Primary Tumor


**Note 1:** 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. **Note 2:** EOD Primary Tumor includes direct extension or discontinuous metastasis to the vagina (see codes 400 and 550). **Note 3:** EOD Primary tumor excludes metastasis to adnexa or uterine serosa (See EOD Mets).
Code Description SS2018 T
000 In situ, intraepithelial, noninvasive, preinvasive Cancer in situ WITH endocervical gland involvement Cervical intraepithelial neoplasia (CIN) Grade III IS
100 Not clinically visible (diagnosed only by microscopy) Measured stromal invasion less than or equal to 3.0 mm FIGO Stage IA1 L
150 Not clinically visible (diagnosed only by microscopy) Measured stromal invasion 3.1 mm to 5.0 mm FIGO Stage IA2 L
200 Not clinically visible (diagnosed only by microscopy) Measured stromal invasion less than or equal to 5.0 mm FIGO Stage IA [NOS] L
250 Confined to cervix AND Measured stromal invasion greater than 5.0 mm FIGO Stage IB1, IB2, IB3 L
300 Localized, NOS Confined to cervix uteri or uterus, NOS, except corpus uteri, NOS FIGO Stage IB [NOS] L
350 Corpus uteri, NOS Confined to corpus uteri, size, depth and horizontal spread unknown FIGO Stage I [NOS] RE
400 Any size tumor WITHOUT parametrial (paracervical soft tissue) invasion - Cul de sac (rectouterine pouch) - Upper two-thirds of vagina including fornices - Vagina, NOS - Vaginal wall, NOS FIGO Stage IIA (IIA1, IIA2, IIA NOS) RE
450 Ligament(s) (broad, cardinal, uterosacral) Parametrial (paracervical soft tissue) invasion FIGO Stage IIB RE
500 Invasion beyond uterus, NOS FIGO Stage II [NOS] RE
550 Bladder wall Bladder, NOS excluding mucosa Bullous edema of bladder mucosa Rectal wall Rectum, NOS excluding mucosa Ureter, intra- and extramural Vagina, lower third (not extending to pelvic wall) Vulva FIGO Stage IIIA RE
600 Described clinically as frozen pelvis Hydronephrosis or nonfunctioning kidney Pelvic wall(s) FIGO Stage IIIB RE
700 Fallopian tube(s) Ovary(ies) Urethra FIGO Stage III [NOS] RE
750 Bladder mucosa (for bullous edema of bladder mucosa, see code 550) Rectal mucosa Sigmoid colon Small intestine FIGO Stage IVA 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) (4) **Cervix Uteri**, from the AJCC Cancer Staging System Version 9 (2020). Used with permission of the American College of Surgeons, Chicago, Illinois.