ICD-10 Code G46.2 – Posterior cerebral artery syndrome (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G46.2 – Posterior cerebral artery syndrome
What it is
This code identifies a cerebrovascular syndrome caused by dysfunction in the posterior cerebral artery territory. Use it when documentation describes neurologic deficits linked to that vascular distribution.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include visual field loss, visual agnosia, memory problems, or other focal neurologic deficits consistent with posterior circulation involvement.
When to use this code
Use G46.2 when the provider documents posterior cerebral artery syndrome, posterior cerebral artery infarct syndrome, or a similar vascular syndrome affecting that territory. It may also apply when the record clearly links the neurologic deficits to the posterior cerebral artery. If the documentation is nonspecific, check documentation before assigning the code.
Do not use for
Do not use this code for nonspecific stroke symptoms without a documented posterior cerebral artery syndrome. Avoid it when the condition is better described by another cerebrovascular diagnosis. Check documentation.
Coding tip
Assign G46.2 only when the provider explicitly ties the syndrome to the posterior cerebral artery territory.