ICD-10 Code I63.29 – Cerebral infarction due to unspecified occlusion or stenosis of other precerebral arteries (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.29 – Cerebral infarction due to unspecified occlusion or stenosis of other precerebral arteries
What it is
This code identifies an ischemic stroke caused by blockage or narrowing in a precerebral artery other than the major named vessels. Use it when documentation confirms cerebral infarction but the specific artery is not further specified.
Clinical signs
Findings usually reflect an acute focal neurologic deficit, such as weakness, speech disturbance, vision loss, or sensory change. Clinical features vary; refer to documentation and imaging or vascular studies when available.
When to use this code
Use I63.29 when the record states cerebral infarction due to occlusion or stenosis of an “other” precerebral artery and does not name a more specific vessel. It also fits when the provider documents the artery as unspecified within that category. Make sure the infarction is acute and ischemic, not a remote stroke history.
Do not use for
Do not use this code for hemorrhagic stroke, transient ischemic attack, or old infarction without an acute event. Do not use it when the affected artery is documented more specifically elsewhere; check documentation.
Coding tip
Look for the exact artery name in the note, because a more specific I63 code may apply if the vessel is identified.