O99.841
BillableBariatric surgery status complicating pregnancy, first trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O99.841 an HCC code?
No. O99.841 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
O99.841 is the ICD-10-CM diagnosis code for bariatric surgery status complicating pregnancy, first trimester. A pregnant woman has had weight loss surgery in the past and is in her first trimester (weeks 1-13 of pregnancy). Prior bariatric surgery can affect nutrient absorption and pregnancy outcomes. O99.841 sits in the ICD-10-CM chapter for pregnancy, childbirth and the puerperium (o00-o9a), within the section covering other obstetric conditions, not elsewhere classified (o94-o9a).
O99.841 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.
This code is specific to the first trimester; ensure the patient is documented as being in weeks 1-13 of gestation.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O99.841 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is specific to the first trimester; ensure the patient is documented as being in weeks 1-13 of gestation
- •Document the type of bariatric procedure performed and any nutritional monitoring or supplementation being provided