O99.843
BillableBariatric surgery status complicating pregnancy, third trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is O99.843 an HCC code?
No. O99.843 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
O99.843 is the ICD-10-CM diagnosis code for bariatric surgery status complicating pregnancy, third trimester. A pregnant woman who has had weight loss surgery and is experiencing complications related to this surgery during the third trimester of pregnancy. O99.843 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).
O99.843 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 third trimester documentation; bariatric surgery complications may include malnutrition, anemia, or metabolic issues affecting late pregnancy.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O99.843 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Confirm third trimester documentation; bariatric surgery complications may include malnutrition, anemia, or metabolic issues affecting late pregnancy
- •Link any nutritional or metabolic complications to the bariatric surgery status for complete clinical picture