ICD-10 Code I63.32 – Cerebral infarction due to thrombosis of anterior cerebral artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.32 – Cerebral infarction due to thrombosis of anterior cerebral artery
What it is
This code identifies an ischemic stroke caused by a blood clot blocking the anterior cerebral artery. Use it when documentation specifies cerebral infarction due to thrombosis in that artery.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include sudden neurologic deficits consistent with an anterior cerebral artery territory stroke, such as leg-predominant weakness, speech changes, or altered behavior.
When to use this code
Assign I63.32 when the provider documents cerebral infarction from thrombosis of the anterior cerebral artery. Use it for confirmed ischemic stroke cases, including imaging-supported diagnoses, when the artery and mechanism are clearly stated.
If the record only says “stroke” or “cerebral infarction” without the vessel or cause, check documentation before coding. Code the most specific diagnosis supported by the note and imaging.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or cerebral infarction from embolism or unspecified occlusion. Check documentation if the artery involved is not clearly identified.
Coding tip
Look for both the infarction and the thrombosis of the anterior cerebral artery in the provider’s final diagnosis before assigning I63.32.