ICD-10 F42
Non-Billable HeaderObsessive-compulsive disorder
About ICD-10-CM F42
ICD-10-CM code F42 represents Obsessive-compulsive disorder. This is a non-billable header code in the Mental, Behavioral, and Neurodevelopmental chapter (block F42). The 2026 edition of ICD-10-CM F42 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 F42, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- obsessive-compulsive personality (disorder) (F60.5)
- obsessive-compulsive symptoms occurring in depression (F32.-, F33.-)
- obsessive-compulsive symptoms occurring in schizophrenia (F20.-)
Medicare LCD Coverage for F42
Local Coverage Determinations (LCDs) from CMS MACs that list F42 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 F42.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but F42 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with F42
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 F42
Other codes in section F40-F48 (Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders).
ICD-10 F42, Billing FAQ
Is ICD-10 code F42 billable? +
No, F42 is a non-billable header code. Use a more specific child code from block F42 when submitting claims.
What codes are Type 2 Excludes for F42? +
Type 2 Excludes (may be coded together when both conditions exist): obsessive-compulsive personality (disorder) (F60.5); obsessive-compulsive symptoms occurring in depression (F32.-, F33.-); obsessive-compulsive symptoms occurring in schizophrenia (F20.-)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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