F98.9
BillableUnspecified behavioral and emotional disorders with onset usually occurring in childhood and adolescence
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is F98.9 an HCC code?
No. F98.9 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
F98.9 is the ICD-10-CM diagnosis code for unspecified behavioral and emotional disorders with onset usually occurring in childhood and adolescence. A behavioral or emotional disorder that started in childhood or adolescence but doesn't fit into a more specific diagnostic category. F98.9 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering behavioral and emotional disorders with onset usually occurring in childhood and adolescence (f90-f98).
F98.9 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 a more specific behavioral/emotional disorder code cannot be assigned.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F98.9 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 a more specific behavioral/emotional disorder code cannot be assigned
- •Review documentation for any additional behavioral symptoms that might allow for a more specific diagnosis code