ICD-10 Code I63.432 – Cerebral infarction due to embolism of left posterior cerebral artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.432 – Cerebral infarction due to embolism of left posterior cerebral artery
What it is
This code identifies an ischemic stroke caused by an embolus that blocks the left posterior cerebral artery. It means brain tissue in that artery’s territory has suffered infarction from reduced blood flow.
Clinical signs
Findings depend on the affected brain region, but may include visual field loss, sensory changes, or language and memory problems. Clinical features vary; refer to documentation.
When to use this code
Use I63.432 when the record clearly states cerebral infarction due to embolism involving the left posterior cerebral artery. Code it when the provider documents an acute ischemic stroke in that vascular territory and names embolism as the cause.
Do not infer laterality or etiology from imaging alone if the documentation is unclear. If the note only says “stroke” or “CVA,” check documentation before assigning this code.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or infarction from thrombosis or unspecified occlusion. Check documentation if the artery, side, or embolic cause is not stated.
Coding tip
Confirm both the embolic cause and left posterior cerebral artery location in the provider’s final diagnosis before coding.