Data Last Updated: June 9, 2025

NAACCR Item #3837: Gestational Trophoblastic Prognostic Scoring Index

Item # Length Source of Standard Section Name Year Implemented Version Implemented XML NAACCR ID Parent XML Element
3837 2 NAACCR Stage/Prognostic Factors 2018 18 gestationalTrophoblasticPxIndex Tumor
Required Status:

NPCR Collect: No recommendation
CoC Collect: Required, site specific
SEER Collect: Required, site specific
CCCR Collect: Required, site specific; when available

Description
Gestational Trophoblastic Prognostic Scoring Index, a score based on the FIGO-modified World Health Organization (WHO) Prognostic Scoring Index, is used to stratify women with gestational trophoblastic neoplasia in addition to the anatomical stage group. The risk score is appended to the anatomic stage.
Rationale
This data item is required for prognostic stage grouping in AJCC 8th edition, Chapter 56 *Gestational Trophoblastic Neoplasms*. It was previously collected as Placenta, CS SSF # 1.
Allowable Values
00-25, X9
Codes
Code Description
00-25 Risk factor score
X9 Not documented in medical record Prognostic scoring index not assessed, or unknown if assessed
Code Notes
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.