O30.833
BillableOther specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, third trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O30.833 an HCC code?
No. O30.833 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
O30.833 is the ICD-10-CM diagnosis code for other specified multiple gestation, number of chorions and amnions are both equal to the number of fetuses, third trimester. A multiple pregnancy where each fetus has its own placenta and amniotic sac, occurring in the third trimester (weeks 28 through delivery). O30.833 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).
O30.833 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.
This represents the safest configuration for multiple pregnancy in the third trimester.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O30.833 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This represents the safest configuration for multiple pregnancy in the third trimester
- •Verify third trimester dating is clearly documented in the medical record