ICD-10 Code F03.A11 – Unspecified dementia, mild, with agitation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F03.A11 – Unspecified dementia, mild, with agitation
What it is
This code identifies mild dementia when the type is not specified and agitation is documented. Use it when cognitive decline is present, but the record does not name a more specific dementia diagnosis.
Clinical signs
Typical findings include mild memory or thinking impairment with behavioral agitation, such as restlessness or irritability. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents unspecified dementia at a mild stage and also notes agitation. It fits encounters where the dementia type is not clarified, but the behavioral symptom is clearly recorded. Check documentation if severity or subtype is uncertain.
Do not use for
Do not use it if the dementia type is specified, such as Alzheimer’s disease or vascular dementia. Do not assign it when agitation is not documented or when the chart supports a different dementia severity.
Coding tip
Code both the dementia severity and the documented agitation only when the provider records both clearly.