ICD-10 Code F03.B11 – Unspecified dementia, moderate, with agitation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F03.B11 – Unspecified dementia, moderate, with agitation
What it is
This code identifies dementia of moderate severity when the type is not specified and agitation is documented. Use it for cognitive decline with behavioral disturbance, but without a more specific dementia diagnosis.
Clinical signs
Typical findings include impaired memory, confusion, and reduced ability to manage daily activities, along with agitation such as restlessness, irritability, or combative behavior. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents unspecified dementia, moderate stage, and specifically notes agitation. It is appropriate when the record supports dementia severity but does not name a more specific dementia subtype. Check documentation if the behavior is described differently or if severity is unclear.
Do not use for
Do not use this code if the dementia type is identified more specifically, or if agitation is not documented. Avoid it when the chart supports a different severity level or another cause of altered mental status.
Coding tip
Confirm both moderate dementia and agitation in the same note before assigning F03.B11.