O30.122
BillableTriplet pregnancy with two or more monoamniotic fetuses, second trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O30.122 an HCC code?
No. O30.122 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
O30.122 is the ICD-10-CM diagnosis code for triplet pregnancy with two or more monoamniotic fetuses, second trimester. A pregnancy with three fetuses where two or more share the same amniotic sac during the second trimester (weeks 14-20). This configuration carries increased risks of fetal complications. O30.122 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).
O30.122 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.
Ensure documentation specifies second trimester dating (weeks 14-20) to differentiate from other trimester codes.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O30.122 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Ensure documentation specifies second trimester dating (weeks 14-20) to differentiate from other trimester codes
- •Review imaging reports to confirm monoamniotic status is documented for the triplet pregnancy