O23.522
BillableSalpingo-oophoritis in pregnancy, second trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O23.522 an HCC code?
No. O23.522 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
O23.522 is the ICD-10-CM diagnosis code for salpingo-oophoritis in pregnancy, second trimester. An infection of the fallopian tubes and ovaries occurring during the second trimester of pregnancy. O23.522 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).
O23.522 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.
Verify trimester documentation corresponds to weeks 13-27 of pregnancy.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O23.522 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify trimester documentation corresponds to weeks 13-27 of pregnancy
- •Document any associated complications such as abscess formation, as these may require additional coding