F51.01
F51.01: Primary insomnia
Billable / specific codeICD-10-CM
F51.01 is a billable, specific ICD-10-CM code for primary insomnia. It is valid for submission on a claim.
Check F51.01 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Idiopathic insomnia
Excludes2 inherited from the categories above F51.01
Not part of this code, but both may be coded when both are present.
Written on F51.0: Insomnia not due to a substance or known physiological condition
- alcohol related insomnia (F10.182, F10.282, F10.982)
- drug-related insomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982)
- insomnia NOS (G47.0-)
- insomnia due to known physiological condition (G47.0-)
- organic insomnia (G47.0-)
- sleep deprivation (Z72.820)
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
F51.01 is named in 13 Medicare coverage policies: 11 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
- A56865Billing and Coding: Psychiatric Inpatient Hospitalizationnot covered
- A56818Billing and Coding: Urine Drug Testing
- A56923Billing and Coding: Outpatient Sleep Studies
Alphabetic index entries that lead here
- Insomnia›idiopathic
- Insomnia›nonorganic origin
- Insomnia›not due to a substance or known physiological condition
- Insomnia›primary
Code history
Unchanged in every release from FY2024 to FY2027.