ICD-10 Code F01.B11 – Vascular dementia, moderate, with agitation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F01.B11 – Vascular dementia, moderate, with agitation
What it is
Vascular dementia is a decline in memory and thinking caused by reduced blood flow or injury to the brain. This code specifies moderate severity and the presence of agitation.
Clinical signs
Expect cognitive impairment affecting daily function, with symptoms that fit a moderate stage. Agitation may appear as restlessness, irritability, or resistance to care; clinical features vary, refer to documentation.
When to use this code
Use this code when the record clearly documents vascular dementia at a moderate level and also documents agitation. You should code it when the provider links the behavioral symptom to the dementia diagnosis or records it as part of the condition.
Do not assume agitation from general confusion alone. If the chart does not specify vascular dementia, moderate severity, and agitation, check documentation before assigning F01.B11.
Do not use for
Do not use this code for other dementia types, such as Alzheimer’s disease or unspecified dementia. Also avoid it when agitation is absent or when the severity is not documented.
Coding tip
Confirm both the dementia type and the associated behavioral symptom in the provider note before coding.