F79
F79: Unspecified intellectual disabilities
Billable / specific codeICD-10-CM
F79 is a billable, specific ICD-10-CM code for unspecified intellectual disabilities. It is valid for submission on a claim.
Check F79 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Mental deficiency NOS
- Mental subnormality NOS
Other codes that can never be billed with F79
Their own Excludes1 notes name this code, so the conflict is not listed above.
- R41.83Borderline intellectual functioning
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
F79 is named in 5 Medicare coverage policies: 3 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which one applies depends on your Medicare contractor.
- A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
- A56937Billing and Coding: Psychiatry and Psychology Servicesnot covered
- A57361Billing and Coding: Monitored Anesthesia Care
- A57434Billing and Coding: Vestibular and Audiologic Function Studies
Alphabetic index entries that lead here
- Development›tardy, mental
- Disability, disabilities›intellectual
Code history
Unchanged in every release from FY2024 to FY2027.