ICD-10 Code F02.A11 – Dementia in other diseases classified elsewhere, mild, with agitation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F02.A11 – Dementia in other diseases classified elsewhere, mild, with agitation
What it is
This code identifies mild dementia caused by another underlying disease, with agitation documented as a behavioral disturbance. Use it when the dementia is secondary to a known condition and the record supports mild severity.
Clinical signs
Expect mild cognitive decline with preserved basic function, plus agitation such as restlessness, irritability, or emotional upset. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents dementia due to another disease and specifically notes mild severity with agitation. It fits cases where the underlying cause is identified, such as a documented neurologic or systemic condition. Code only when both dementia and agitation are clearly supported.
Do not use for
Do not use it for unspecified dementia, dementia without agitation, or dementia not linked to another disease. Check documentation if the record does not clearly state mild severity or the underlying condition.
Coding tip
Confirm the causal condition and the behavior detail, because both are needed for accurate code selection.