ICD-10 Code F02.B11 – Dementia in other diseases classified elsewhere, moderate, with agitation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F02.B11 – Dementia in other diseases classified elsewhere, moderate, with agitation
What it is
This code identifies moderate dementia caused by another underlying disease, with agitation noted. Use it when the dementia is secondary to a known condition and the chart documents agitation.
Clinical signs
Expect clear cognitive decline with moderate functional impairment, plus agitation such as restlessness, irritability, or disruptive behavior. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents dementia due to another disease and specifies the severity as moderate. The record must also state agitation, not just confusion or behavioral change.
It is appropriate when the underlying disease is known and the dementia is described as secondary to that condition. Check documentation if the severity or behavioral feature is not clearly recorded.
Do not use for
Do not use this code for dementia without agitation, or when the dementia is not linked to another disease. Do not assign it if the chart only says memory loss or delirium.
Coding tip
Verify both the underlying cause and the exact behavioral qualifier before coding F02.B11.