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F01 · Vascular dementia

2026 ICD-10-CM Diagnosis Code F01

Code details

Code attributes

  • Non-billable/Non-specific code

Coding rules

  • Specify the leaf code — the parent code (e.g. F32) is a navigational header; billing requires a leaf code (F32.0, F32.1, etc.) that matches the documented presentation.
  • Document onset, course, and severity (mild / moderate / severe) plus functional impact. Payers use this combination when adjudicating medical necessity.
  • Attach a validated instrument score (PHQ-9, GAD-7, PCL-5, or equivalent) at intake and at follow-up where applicable. Objective measures support code selection and continued authorization.
  • Review at every visit and update if presentation changes — including remission and partial remission states.

Clinical information

Vascular dementia results from cerebrovascular disease and is characterized by stepwise cognitive decline. Documentation should specify the underlying vascular event and any behavioral disturbance.

Sources

  • Centers for Medicare & Medicaid Services — 2026 ICD-10-CM
  • AAPC — ICD-10-CM Code Lookup
  • CDC — ICD-10-CM Official Guidelines for Coding and Reporting

This reference is provided for billing and documentation guidance only. It is not medical advice. For clinical decision-making, consult the current CMS ICD-10-CM Official Guidelines for Coding and Reporting, and verify code applicability against the patient's documented clinical findings.

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