F42: Obsessive-compulsive disorder
Codes under F42 (Obsessive-compulsive disorder). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| F42.2 | Mixed obsessional thoughts and acts | ✓ |
| F42.2 | Mixed obsessional thoughts and acts | ✓ |
| F42.3 | Hoarding disorder | ✓ |
| F42.3 | Hoarding disorder | ✓ |
| F42.4 | Excoriation (skin-picking) disorder | ✓ |
| F42.4 | Excoriation (skin-picking) disorder | ✓ |
| F42.8 | Other obsessive-compulsive disorder | ✓ |
| F42.8 | Other obsessive-compulsive disorder | ✓ |
| F42.9 | Obsessive-compulsive disorder, unspecified | ✓ |
| F42.9 | Obsessive-compulsive disorder, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code F42?
F42 is an ICD-10-CM category covering Obsessive-compulsive disorder. It contains 10 more specific diagnosis codes, 10 of which are billable.
Is F42 a billable code?
No — F42 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example F42.2 — Mixed obsessional thoughts and acts). 10 of the 10 codes under F42 are billable.
What codes fall under F42?
F42 includes F42.2, F42.2, F42.3, F42.3, F42.4, plus 5 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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