O23.512
BillableInfections of cervix in pregnancy, second trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O23.512 an HCC code?
No. O23.512 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
O23.512 is the ICD-10-CM diagnosis code for infections of cervix in pregnancy, second trimester. An infection of the cervix (the opening of the uterus) during the second three months of pregnancy. O23.512 sits in the ICD-10-CM chapter for pregnancy, childbirth and the puerperium (o00-o9a), within the section covering other maternal disorders predominantly related to pregnancy (o20-o29).
O23.512 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.
Confirm second trimester is documented; use O23.511 for first trimester or O23.513 for third trimester.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O23.512 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.