ICD-10 Code F01.518 – Vascular dementia, unspecified severity, with other behavioral disturbance (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F01.518 – Vascular dementia, unspecified severity, with other behavioral disturbance
What it is
This code identifies vascular dementia when severity is not specified and the patient has behavioral disturbance. Use it for dementia caused by cerebrovascular disease that includes noncognitive behavioral symptoms.
Clinical signs
Clinical features vary; refer to documentation. Common findings include impaired memory or executive function with behavioral disturbance such as agitation, mood change, wandering, or inappropriate behavior.
When to use this code
Use this code when the record states vascular dementia and documents behavioral disturbance, but does not specify mild, moderate, or severe severity. It is also appropriate when the provider links the behavioral symptoms to the dementia. If the note names a different dementia type, do not assign this code.
Do not use for
Do not use it for vascular dementia without behavioral disturbance or when a different severity is clearly documented. Check documentation if the behavioral issue is due to another psychiatric, neurologic, or medication-related cause.
Coding tip
Code the dementia type, severity, and behavioral disturbance only when all are supported in the provider note.