ICD-10 Code F01.5 – Vascular dementia, unspecified severity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F01.5 – Vascular dementia, unspecified severity
What it is
F01.5 identifies vascular dementia when the record does not specify mild, moderate, or severe impairment. It reflects dementia caused by cerebrovascular disease, with severity left unspecified in the documentation.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see cognitive decline with problems in memory, judgment, attention, or executive function, often alongside a history or evidence of cerebrovascular disease.
When to use this code
Use F01.5 when the provider documents vascular dementia but does not state the severity. It also fits when the note confirms a vascular cause of dementia without further detail on functional impact. If the record specifies severity, code to the more specific option instead.
Do not use for
Do not use this code for Alzheimer disease, unspecified dementia, or cognitive changes without a documented vascular cause. Check documentation if the chart only mentions stroke history or memory loss.
Coding tip
Verify that both dementia and vascular etiology are documented before assigning F01.5.