ICD-10 Code F90 – Attention-deficit hyperactivity disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F90 – Attention-deficit hyperactivity disorders
What it is
F90 identifies attention-deficit hyperactivity disorders, a group of neurodevelopmental conditions marked by persistent inattention, hyperactivity, and impulsivity. Use it when the record documents this diagnosis without a more specific subtype.
Clinical signs
Clinical features include difficulty sustaining attention, excessive motor activity, and impulsive behavior that interferes with functioning. Symptoms usually appear in more than one setting; clinical features vary, so refer to documentation.
When to use this code
Use F90 when the clinician documents attention-deficit hyperactivity disorder and does not specify a more detailed code. It also applies when the note supports the diagnosis but lacks subtype detail. Check documentation if the record suggests another behavioral or developmental condition.
Do not use for
Do not use F90 for isolated poor concentration, normal childhood restlessness, or behavior problems without a documented diagnosis. If the chart names a different disorder, code that condition instead.
Coding tip
Code only when the provider clearly documents ADHD or attention-deficit hyperactivity disorder; if specificity is available, choose the most detailed code.