ICD-10 Code I60.1 – Nontraumatic subarachnoid hemorrhage from middle cerebral artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I60.1 – Nontraumatic subarachnoid hemorrhage from middle cerebral artery
What it is
I60.1 identifies a nontraumatic subarachnoid hemorrhage that originates from the middle cerebral artery. Use it when documentation specifies this artery as the source of bleeding.
Clinical signs
Clinical features vary; refer to documentation. Common findings in subarachnoid hemorrhage include sudden severe headache, meningeal irritation, nausea, vomiting, altered mental status, or focal neurologic deficits.
When to use this code
Use I60.1 when the provider documents a spontaneous subarachnoid hemorrhage tied to the middle cerebral artery. It may appear in imaging, operative, or discharge documentation naming that vessel. If the artery source is not specified, check documentation before coding.
Do not use for
Do not use this code for traumatic subarachnoid hemorrhage or for hemorrhage from another intracranial vessel. If the record does not identify the middle cerebral artery, check documentation.
Coding tip
Code the vessel-specific diagnosis only when the source artery is clearly documented; otherwise, query the provider.