Placenta

Primary Site Histology Staging Type
C589 8000-9099, 9106-9136, 9141-9582, 9700-9701 Summary Stage only
C589 9100-9105 TNM 7 and Summary Stage

If you are working with a site/histology that only summary stages and you need to directly code it, please use the SEER Summary Stage 2000 manual

Notes

C589 Placenta

Note 1: This schema is based on the UICC chapter Gestational Trophoblastic Tumours, pages 232-236.

Note 2: This classification applies to choriocarcinoma (9100/3). Placental site tumors should be reported separately. Histologic confirmation is not required if the human chorionic gonadotropin (BhCG) level is abnormally elevated.

Note 3: If a trophoblastic tumor is not associated with a pregnancy and arises in another site, such as ovary, use the primary site code and the appropriate TNM chapter.

Note 4: In addition to directly assigning TNM, Summary Stage 2000 (SS2000) must be captured. If directly assigning SS2000, use the Placenta chapter on page 222 of the SS2000 on-line manual.

Main Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Clinical T <BLANK> Yes NAACCR #940 None
Clinical M <BLANK> Yes NAACCR #960 None
TNM Clin Stage Group 99 Yes NAACCR #970 None
Pathologic T <BLANK> Yes NAACCR #880 None
Pathologic M <BLANK> Yes NAACCR #900 None
TNM Path Stage Group 99 Yes NAACCR #910 None
SSF1: Prognostic Scoring Index 999 Yes NAACCR #2880 All None
SSF2: FIGO Stage 988 No NAACCR #2890 CCCR/Canada
COC
None

Additional Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Year of Diagnosis <BLANK> No NAACCR #390 None
Primary Site <BLANK> Yes NAACCR #400 None
Histology <BLANK> Yes NAACCR #522 None
RX Summ Systemic/Surgery Sequence <BLANK> Yes NAACCR #1639 None
RX Summ Surgery/Radiation Sequence <BLANK> Yes NAACCR #1380 None