ICD-10 Code F63.9 – Impulse disorder, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F63.9 – Impulse disorder, unspecified
What it is
F63.9 identifies an impulse disorder when the specific type is not documented. Use this code for a disorder marked by poor control over urges or impulses, but where the record does not name a more specific condition.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe repetitive impulsive behaviors, tension before the act, and relief afterward, but you should only code what the clinician actually documents.
When to use this code
Use F63.9 when the provider diagnoses an impulse disorder and does not specify a subtype such as a named compulsive or habit disorder. It also fits when the chart supports an impulse-control problem, but the exact diagnosis remains unclear.
Do not use for
Do not use this code for a documented, more specific impulse disorder. Also avoid it when the behavior is better explained by another mental health diagnosis; check documentation.
Coding tip
If the note names a specific disorder, code that diagnosis instead of F63.9.