ICD-10 Code F01.B1 – Vascular dementia, moderate, with behavioral disturbance (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F01.B1 – Vascular dementia, moderate, with behavioral disturbance
What it is
This code identifies vascular dementia of moderate severity with behavioral disturbance. Use it when cognitive decline is attributed to vascular disease and the record also documents behavioral symptoms.
Clinical signs
Typical findings include impaired memory, slowed thinking, and reduced ability to manage daily activities. Behavioral disturbance may include agitation, aggression, wandering, or other documented behavioral changes; clinical features vary, so refer to documentation.
When to use this code
Use F01.B1 when the provider documents moderate vascular dementia and explicitly notes a behavioral disturbance. You should also use it when the chart links the dementia to cerebrovascular disease or other vascular cause. If severity or behavioral features are not stated, check documentation before coding.
Do not use for
Do not use this code for vascular dementia without behavioral disturbance, or when the dementia type is unspecified. Avoid it if the record describes a different dementia etiology or if the behavioral symptoms are not documented.
Coding tip
Confirm both elements—moderate severity and behavioral disturbance—before assigning F01.B1.