ICD-10 Code I63.219 – Cerebral infarction due to unspecified occlusion or stenosis of unspecified vertebral artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.219 – Cerebral infarction due to unspecified occlusion or stenosis of unspecified vertebral artery
What it is
This code identifies an ischemic stroke caused by blockage or narrowing of a vertebral artery, but the side and exact cause are not specified. Use it when documentation confirms cerebral infarction linked to an unspecified vertebral artery lesion.
Clinical signs
Clinical features vary; refer to documentation. Stroke findings may include sudden neurologic deficits such as dizziness, gait problems, weakness, speech changes, or visual symptoms, with imaging or provider assessment supporting infarction.
When to use this code
Use this code when the record states cerebral infarction due to occlusion or stenosis of a vertebral artery and does not identify the right or left side. It also fits when the provider documents the artery as unspecified. If laterality or a different stroke mechanism is documented, code that more specific information instead.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or vertebral artery disease without infarction. Check documentation if the infarction cause is another artery or if laterality is specified.
Coding tip
Query for laterality and exact vessel details when the note says vertebral artery stroke, because a more specific I63 code may be available.