ICD-10 Code F01.B – Vascular dementia, moderate (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F01.B – Vascular dementia, moderate
What it is
F01.B identifies vascular dementia at a moderate stage. Use it when documentation shows cognitive decline caused by cerebrovascular disease and the impairment is neither mild nor severe.
Clinical signs
Common findings include memory loss, slowed thinking, impaired judgment, and difficulty with daily activities. Clinical features vary; refer to documentation for the documented level of functional and cognitive impairment.
When to use this code
Use this code when the provider documents moderate vascular dementia, or when the record clearly supports a moderate stage tied to vascular causes. It is appropriate for follow-up visits, problem lists, and assessments that specify this severity. Check documentation if the stage is unclear.
Do not use for
Do not use it for dementia from another cause, such as Alzheimer disease, or for unspecified dementia severity. If the chart does not clearly support a moderate stage, do not assume it.
Coding tip
Code the vascular dementia severity exactly as documented, and verify that the record supports the moderate stage before assigning F01.B.