ICD-10 Code I63.449 – Cerebral infarction due to embolism of unspecified cerebellar artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.449 – Cerebral infarction due to embolism of unspecified cerebellar artery
What it is
This code identifies an ischemic stroke in the cerebellum caused by an embolus blocking an unspecified cerebellar artery. Use it when the record states embolic infarction but does not name the exact cerebellar vessel.
Clinical signs
Clinical features vary; refer to documentation. Typical cerebellar stroke findings may include sudden dizziness, gait ataxia, limb incoordination, nausea, vomiting, or nystagmus, with imaging or clinician assessment supporting infarction.
When to use this code
Use I63.449 when the provider documents cerebral infarction from embolism involving a cerebellar artery, but the artery is not further specified. It also fits discharge summaries, imaging reports, or problem lists that clearly identify an embolic cerebellar infarct without naming the vessel.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or cerebellar infarction from thrombosis or other non-embolic causes. If the artery is named, choose the more specific ICD-10 code instead.
Coding tip
Check the source note for laterality, vessel name, and cause; if the cerebellar artery is unspecified, this code is appropriate.