ICD-10 Code F03.911 – Unspecified Dementia, Unspecified Severity, with Agitation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F03.911 – Unspecified dementia, unspecified severity, with agitation
What it is
This code identifies dementia when the type and severity are not documented, and agitation is present. Use it when the record supports dementia with behavioral disturbance but does not name a more specific dementia diagnosis.
Clinical signs
Patients may show memory loss, confusion, impaired judgment, and a decline in daily functioning. Agitation can appear as restlessness, irritability, pacing, verbal outbursts, or resistance to care; clinical features vary, so refer to documentation.
When to use this code
Use this code when the provider documents unspecified dementia and also notes agitation as a behavioral symptom. It is appropriate when the chart does not identify Alzheimer’s disease, vascular dementia, or another specific dementia type. Check documentation if severity or etiology is stated elsewhere.
Do not use for
Do not use this code if the record identifies a more specific dementia diagnosis or a different behavioral disturbance. Do not assign it when agitation is absent or when documentation is too vague to support dementia.
Coding tip
Confirm that agitation is explicitly linked to the dementia diagnosis before coding F03.911.