ICD-10 Code F01.B3 – Vascular dementia, moderate, with mood disturbance (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F01.B3 – Vascular dementia, moderate, with mood disturbance
What it is
This code identifies vascular dementia of moderate severity when mood disturbance is documented. It reflects cognitive decline due to vascular disease, with symptoms significant enough to affect daily function.
Clinical signs
Typical findings include impaired memory, slowed thinking, poor judgment, and reduced ability to manage routine tasks. Mood changes such as depression, anxiety, or emotional lability may also be documented; clinical features vary, refer to documentation.
When to use this code
Use this code when the provider documents vascular dementia as moderate and specifically notes mood disturbance. The record should support both the dementia type and the severity level. If the mood issue is not clearly linked, check documentation.
Do not use for
Do not use this code for vascular dementia without documented mood disturbance, or when severity is not moderate. Also avoid it if the diagnosis is another dementia type or the chart only says cognitive impairment; check documentation.
Coding tip
Verify that both “moderate” severity and mood disturbance are explicitly documented before assigning F01.B3.