ICD-10 F51.0
Non-Billable HeaderInsomnia not due to a substance or known physiological condition
About ICD-10-CM F51.0
ICD-10-CM code F51.0 represents Insomnia not due to a substance or known physiological condition. This is a non-billable header code in the Mental, Behavioral, and Neurodevelopmental chapter (block F51). The 2026 edition of ICD-10-CM F51.0 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 2 Excludes
Not included here, the excluded code is not part of F51.0, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- 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)
Medicare LCD Coverage for F51.0
Local Coverage Determinations (LCDs) from CMS MACs that list F51.0 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing F51.0.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but F51.0 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with F51.0
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To F51.0
Other codes in section F50-F59 (Behavioral syndromes associated with physiological disturbances and physical factors).
ICD-10 F51.0, Billing FAQ
Is ICD-10 code F51.0 billable? +
No, F51.0 is a non-billable header code. Use a more specific child code from block F51 when submitting claims.
What codes are Type 2 Excludes for F51.0? +
Type 2 Excludes (may be coded together when both conditions exist): 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-)
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team