ICD-10 Code I63.442 – Cerebral infarction due to embolism of left cerebellar artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.442 – Cerebral infarction due to embolism of left cerebellar artery
What it is
This code identifies an ischemic stroke caused by an embolus blocking the left cerebellar artery. It means part of the left cerebellum did not receive blood flow and suffered infarction.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings may include sudden dizziness, gait imbalance, nausea, vomiting, limb incoordination, or other posterior circulation stroke signs.
When to use this code
Use this code when the provider documents cerebral infarction specifically due to embolism in the left cerebellar artery. The record should support an acute ischemic stroke affecting that vascular territory. If laterality or embolic cause is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or infarction from thrombosis or unspecified occlusion. If the embolic source is not documented, check documentation.
Coding tip
Verify both the embolic mechanism and left cerebellar artery laterality in the provider note before coding.