O46.011
BillableAntepartum hemorrhage with afibrinogenemia, first trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O46.011 an HCC code?
No. O46.011 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
O46.011 is the ICD-10-CM diagnosis code for antepartum hemorrhage with afibrinogenemia, first trimester. Bleeding during the first trimester of pregnancy caused by afibrinogenemia, a rare condition where the body cannot produce fibrinogen, a protein essential for blood clotting. O46.011 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).
O46.011 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.
Afibrinogenemia is a specific and serious coagulation defect; ensure this diagnosis is explicitly documented.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O46.011 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Afibrinogenemia is a specific and serious coagulation defect; ensure this diagnosis is explicitly documented
- •First trimester is weeks 1-13; verify this timing in the obstetric record