O29.8X1
BillableOther complications of anesthesia during pregnancy, first trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O29.8X1 an HCC code?
No. O29.8X1 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
O29.8X1 is the ICD-10-CM diagnosis code for other complications of anesthesia during pregnancy, first trimester. A pregnant woman in her first three months experiences an unusual complication from anesthesia given during a medical procedure or surgery. O29.8X1 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).
O29.8X1 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.
Use this code only when the specific anesthesia complication is not captured by more specific O29 codes (such as pulmonary aspiration or cardiac complications).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O29.8X1 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the specific anesthesia complication is not captured by more specific O29 codes (such as pulmonary aspiration or cardiac complications)
- •Always include the trimester indicator; first trimester is less than 14 weeks of gestation