ICD-10 Code I63.431 – Cerebral infarction due to embolism of right posterior cerebral artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.431 – Cerebral infarction due to embolism of right posterior cerebral artery
What it is
This code identifies an ischemic stroke caused by an embolus blocking the right posterior cerebral artery. It indicates brain tissue injury in the artery’s territory, not a hemorrhage.
Clinical signs
Typical findings include sudden neurologic deficits consistent with posterior cerebral artery territory involvement, such as visual field loss, sensory changes, or language-related deficits. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents cerebral infarction from embolism specifically affecting the right posterior cerebral artery. It applies to confirmed ischemic stroke cases with that vascular source and laterality. Check documentation if the record only says stroke, embolic infarct, or posterior circulation event.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or infarction in a different artery territory. If the embolic source or right-sided posterior cerebral artery involvement is not documented, check documentation.
Coding tip
Verify both the embolic cause and the right posterior cerebral artery location before assigning I63.431.