O29.8X3
BillableOther complications of anesthesia during pregnancy, third trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O29.8X3 an HCC code?
No. O29.8X3 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
O29.8X3 is the ICD-10-CM diagnosis code for other complications of anesthesia during pregnancy, third trimester. A pregnant woman in her third trimester (weeks 21 and beyond) experiences an unusual complication from anesthesia given during a medical procedure or surgery. O29.8X3 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).
O29.8X3 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.
Third trimester begins at week 21 and continues through delivery.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O29.8X3 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Third trimester begins at week 21 and continues through delivery
- •Document the specific nature of the anesthesia complication in the medical record for clarity