O30.291
BillableQuadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O30.291 an HCC code?
No. O30.291 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
O30.291 is the ICD-10-CM diagnosis code for quadruplet pregnancy, unable to determine number of placenta and number of amniotic sacs, first trimester. A pregnancy with four babies where the number of placentas and amniotic sacs cannot be determined from imaging during the first three months of pregnancy. O30.291 sits in the ICD-10-CM chapter for pregnancy, childbirth and the puerperium (o00-o9a), within the section covering maternal care related to the fetus and amniotic cavity and possible delivery problems (o30-o48).
O30.291 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Document the reason why placental and amniotic sac configuration could not be determined.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O30.291 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document the reason why placental and amniotic sac configuration could not be determined.
- •Recommend follow-up ultrasound to clarify the chorionicity and amnionicity when possible.