ICD-10 Code F02.B4 – Dementia in other diseases classified elsewhere, moderate, with anxiety (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F02.B4 – Dementia in other diseases classified elsewhere, moderate, with anxiety
What it is
This code identifies moderate dementia caused by another underlying disease, with anxiety documented as part of the presentation. Use it when the dementia is secondary to a known condition and the anxiety is clinically linked.
Clinical signs
Expect clear cognitive decline with moderate functional impairment, such as difficulty managing daily activities or needing more supervision. Anxiety may appear as persistent worry, fearfulness, restlessness, or agitation; clinical features vary, so refer to documentation.
When to use this code
Use F02.B4 when the record states dementia due to another disease and specifies moderate severity with anxiety. You should also verify the underlying disease is documented and coded separately when required. Apply it when anxiety is part of the coded dementia diagnosis, not a separate standalone condition.
Do not use for
Do not use this code for primary degenerative dementia, unspecified dementia, or mild and severe dementia levels. If anxiety is present without documented dementia-related linkage, check documentation and consider a different code.
Coding tip
Confirm both the secondary cause and the moderate-with-anxiety wording before coding, and sequence the underlying disease as directed by the record.