Z68.39
BillableBody mass index [BMI] 39.0-39.9, adult
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is Z68.39 an HCC code?
No. Z68.39 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
Z68.39 is the ICD-10-CM diagnosis code for body mass index [bmi] 39.0-39.9, adult. A measurement of body weight relative to height (BMI) between 39.0 and 39.9 in adults, indicating obesity. Z68.39 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering body mass index [bmi] (z68).
Z68.39 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.
BMI codes are status codes used for documentation purposes and should be reported alongside the diagnosis of obesity (E66.x) when applicable.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z68.39 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •BMI codes are status codes used for documentation purposes and should be reported alongside the diagnosis of obesity (E66.x) when applicable
- •Ensure the BMI calculation is documented in the medical record; these codes require actual BMI values, not estimates