F91: Conduct disorders
Codes under F91 (Conduct disorders). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| F91.0 | Conduct disorder confined to family context | ✓ |
| F91.0 | Conduct disorder confined to family context | ✓ |
| F91.1 | Conduct disorder, childhood-onset type | ✓ |
| F91.1 | Conduct disorder, childhood-onset type | ✓ |
| F91.2 | Conduct disorder, adolescent-onset type | ✓ |
| F91.2 | Conduct disorder, adolescent-onset type | ✓ |
| F91.3 | Oppositional defiant disorder | ✓ |
| F91.3 | Oppositional defiant disorder | ✓ |
| F91.8 | Other conduct disorders | ✓ |
| F91.8 | Other conduct disorders | ✓ |
| F91.9 | Conduct disorder, unspecified | ✓ |
| F91.9 | Conduct disorder, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code F91?
F91 is an ICD-10-CM category covering Conduct disorders. It contains 12 more specific diagnosis codes, 12 of which are billable.
Is F91 a billable code?
No — F91 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 F91.0 — Conduct disorder confined to family context). 12 of the 12 codes under F91 are billable.
What codes fall under F91?
F91 includes F91.0, F91.0, F91.1, F91.1, F91.2, plus 7 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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