ICD-10 Code I63.332 – Cerebral infarction due to thrombosis of left posterior cerebral artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.332 – Cerebral infarction due to thrombosis of left posterior cerebral artery
What it is
This code identifies an ischemic stroke caused by a blood clot blocking the left posterior cerebral artery. It refers to brain tissue injury from reduced blood flow in that arterial territory.
Clinical signs
Clinical features vary; refer to documentation. Findings may include sudden visual field loss, visual processing problems, sensory changes, memory disturbance, or other focal neurologic deficits consistent with left posterior cerebral artery infarction.
When to use this code
Use this code when the provider documents cerebral infarction specifically due to thrombosis of the left posterior cerebral artery. You should confirm the side, vessel, and thrombotic cause in the record. If the documentation only says ischemic stroke or cerebral infarction without vessel detail, check documentation before assigning this code.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or infarction from an unspecified artery. It is also not appropriate if the record does not clearly identify thrombosis of the left posterior cerebral artery.
Coding tip
Always verify laterality and mechanism; this code depends on both being explicitly documented.