ICD-10 Code I63.34 – Cerebral infarction due to thrombosis of cerebellar artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.34 – Cerebral infarction due to thrombosis of cerebellar artery
What it is
This code identifies an ischemic stroke caused by a blood clot blocking a cerebellar artery. It refers to infarction in the cerebellum, the brain area that helps coordinate balance and movement.
Clinical signs
Typical findings include sudden dizziness, gait imbalance, nausea, vomiting, and limb incoordination. Clinical features vary; refer to documentation for imaging confirmation and the specific cerebellar artery involved.
When to use this code
Use I63.34 when the provider documents a cerebral infarction from thrombosis of a cerebellar artery. Apply it when the record supports an acute ischemic stroke in the cerebellum, usually with imaging or specialist assessment. If the artery or mechanism is unclear, check documentation.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or nonspecific cerebral infarction without cerebellar artery thrombosis. If the cause is embolism or another vessel, select the documented code instead.
Coding tip
Confirm both the infarction site and the thrombosis mechanism in the provider note before assigning I63.34.