ICD-10 Code F63.81 – Intermittent Explosive Disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F63.81 – Intermittent explosive disorder
What it is
Intermittent explosive disorder is a behavioral disorder marked by repeated, brief episodes of impulsive aggression that are out of proportion to the trigger. Use this code when the diagnosis is documented and the behavior is not better explained by another condition.
Clinical signs
Clinical features include sudden angry outbursts, verbal aggression, or physical aggression with limited warning. Episodes are impulsive and recurrent; clinical features vary, so refer to documentation.
When to use this code
Use F63.81 when the provider documents intermittent explosive disorder as the reason for evaluation, treatment, or ongoing management. It may also apply when the chart clearly describes recurrent impulsive aggressive episodes consistent with the diagnosis. Check documentation if another psychiatric, neurologic, or substance-related cause is noted.
Do not use for
Do not use this code for ordinary anger, isolated misconduct, or aggression clearly attributed to another disorder, substance use, or medical condition. Check documentation when the diagnosis is uncertain.
Coding tip
Confirm that the provider explicitly links the aggressive episodes to intermittent explosive disorder before assigning F63.81.