ICD-10 Code F01.B4 – Vascular dementia, moderate, with anxiety (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F01.B4 – Vascular dementia, moderate, with anxiety
What it is
This code identifies vascular dementia of moderate severity when anxiety is documented as an associated behavioral symptom. It reflects cognitive decline due to cerebrovascular disease, with enough impairment to affect daily function.
Clinical signs
Typical findings include memory and executive dysfunction, slowed thinking, and reduced ability to manage routine tasks. Anxiety may appear as persistent worry, nervousness, or agitation; clinical features vary, so refer to documentation.
When to use this code
Use this code when the provider documents vascular dementia, moderate, and also notes anxiety as part of the diagnosis or current presentation. It fits cases where the dementia severity and the anxiety component are both clearly stated in the record.
Apply it only when the chart supports vascular etiology rather than another dementia type. If the severity or anxiety is not documented, check documentation before assigning this code.
Do not use for
Do not use this code for vascular dementia without documented moderate severity or without anxiety. Do not substitute it for other dementia types, delirium, or isolated anxiety disorders.
Coding tip
Confirm both the dementia severity and the anxiety association in the provider note before coding F01.B4.