EOD Primary Tumor
Notes
**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 assign the code in preference to a statement of FIGO stage.
**Note 2:** Peritoneal implants or peritoneal carcinomatosis may also be called seeding, salting, talcum powder appearance, or studding.
* Code 600, 650, or 700 based on microscopic or the macroscopic size
* Extraperitoneal carcinomatosis are coded in EOD Mets
**Note 3:** A tumor confined to the peritoneum (code 300) is when there is one pelvic peritoneal tumor, or multiple pelvic peritoneal tumors, without any mention of implants on the specific pelvic/abdominal structures listed in codes 400-750.
**Note 4:** Both extension to and/or discontinuous metastasis to any of the following pelvic organs are included in code 450
- Adnexa, NOS
- Bladder and bladder serosa
- Broad ligament (mesovarium)
- Cul de sac
- Parametrium
- Pelvic peritoneum
- Pelvic wall
- Rectosigmoid
- Rectum
- Sigmoid colon
- Sigmoid mesentery
- Ureter, pelvic
**Note 5:** If implants are mentioned, determine whether they are in the pelvis or in the abdomen and code appropriately. If the location of the implants is not specified, code 750.
**Note 6:** Both extension to and/or discontinuous metastasis to any of the following abdominal organs by way of peritoneal seeding or implants are included in codes 600-750
- Abdominal mesentery
- Diaphragm
- Gallbladder
- Intestine, large (except rectum, rectosigmoid and sigmoid colon)
- Kidneys
- Liver (peritoneal surface)
- Omentum (infracolic, NOS)
- Pancreas
- Pericolic gutter
- Peritoneum, NOS
- Small intestine
- Spleen (capsular involvement only)
- Stomach
- Ureters (outside pelvis)
**Note 7:** Direct extension and/or metastasis to the liver or splenic parenchyma are coded in EOD Mets.
| Code |
Description |
SS2018 T |
| 000 |
In situ, intraepithelial, noninvasive, preinvasive
Limited to tubal mucosa |
IS |
| 300 |
Confined to peritoneum, NOS |
L |
| 400 |
Extension to or implants on
- Adnexa
- Fallopian tube(s)
- Ovary(ies)
- Uterus, NOS
FIGO Stage IIA |
RE |
| 450 |
Extension to or implants to other pelvic tissues
Bladder
Bladder serosa
Cul de sac (rectouterine pouch)
Ligament(s) (broad, ovarian, round, suspensory)
Mesovarium
Parametrium
Pelvic wall
Rectosigmoid
Rectum
Sigmoid colon (including sigmoid mesentery)
Ureter (pelvic portion)
FIGO Stage IIB |
RE |
| 600 |
Microscopic peritoneal implants or microscopic peritoneal carcinomatosis beyond pelvis (above pelvic brim)
- Omentum
- Small intestine
FIGO Stage IIIA |
RE |
| 650 |
Macroscopic peritoneal implants or macroscopic peritoneal carcinomatosis beyond pelvis
- Less than or equal to 2 cm in diameter
- Omentum
- Small Intestine
FIGO Stage IIIB |
D |
| 700 |
Macroscopic peritoneal implants or macroscopic peritoneal carcinomatosis beyond pelvis (above pelvic brim)
- Greater than 2 cm in diameter
- Includes tumor extension to capsule of liver and spleen
+ WITHOUT parenchymal involvement of either organ
FIGO Stage IIIC |
D |
| 750 |
Primary peritoneal carcinoma
* WITH confirmed peritoneal metastasis or peritoneal carcinomatosis outside of the pelvis (above pelvic brim)
* UNKNOWN if microscopic or macroscopic
Peritoneal implants, NOS
Further contiguous extension
FIGO Stage III [NOS] |
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) **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: 631
(6) Prat, J., Olawaiye, A.B., Mutch, D.G., et al. **Ovary, Fallopian Tube, and Primary Peritoneal Carcinoma**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 681-690
