ICD-10 Code I63.429 – Cerebral infarction due to embolism of unspecified anterior cerebral artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.429 – Cerebral infarction due to embolism of unspecified anterior cerebral artery
What it is
This code identifies an ischemic stroke caused by an embolus blocking an unspecified anterior cerebral artery. Use it when the record states cerebral infarction from embolism, but the exact anterior cerebral branch is not specified.
Clinical signs
Findings usually reflect acute focal neurologic deficits from anterior cerebral artery territory infarction. Clinical features vary; refer to documentation for the documented side, onset, and stroke symptoms.
When to use this code
Use I63.429 when the provider documents cerebral infarction due to embolism involving an anterior cerebral artery, but does not name the specific branch. It also fits when imaging or the discharge summary confirms embolic infarction in this territory and no more specific code is documented. Check documentation if the cause or artery is unclear.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or non-embolic cerebral infarction. If the record identifies a more specific anterior cerebral artery branch, code that instead.
Coding tip
Confirm both the embolic mechanism and the documented arterial territory before assigning I63.429.