Anterior spinal artery comprsn synd, occipt-atlan-ax region

This code signifies a neurological condition resulting from the compression of the anterior spinal artery specifically in the occipito-atlanto-axial region of the cervical spine. This compression leads to ischemia of the spinal cord, manifesting as various neurological deficits depending on the severity and location of the vascular compromise.

Apply this code when documentation clearly indicates a diagnosis of anterior spinal artery compression syndrome affecting the C1-C2 vertebral levels. This diagnosis is typically supported by imaging studies (e.g., MRI, MRA) demonstrating arterial compression and clinical findings consistent with spinal cord ischemia in this specific region.

• Ensure the documentation specifies "anterior" spinal artery and the "occipito-atlanto-axial" region to differentiate from other spinal artery syndromes.
• Do not confuse with general spinal cord compression codes (e.g., M51.0-) unless the specific arterial involvement is also documented.
• Look for associated neurological deficits (e.g., motor weakness, sensory loss) that further support the diagnosis.