Osseous and sublux stenosis of intvrt foramin of head region

This code signifies a narrowing of the openings (intervertebral foramina) in the skull and upper cervical spine region, caused by bone overgrowth or a partial dislocation of vertebrae. This stenosis can compress nerves exiting the spinal cord, leading to neurological symptoms.

Apply this code when documentation specifies osseous or subluxation-related stenosis affecting the intervertebral foramina within the head region (e.g., C0-C1, C1-C2). This diagnosis is supported by imaging studies (MRI, CT) demonstrating the narrowing and clinical findings consistent with nerve compression in this area.

• Ensure documentation explicitly states "head region" or specifies the atlanto-occipital/atlanto-axial joints.
• Do not use this code for stenosis in other spinal regions; specific codes exist for cervical, thoracic, and lumbar stenosis.
• Code any associated neurological symptoms (e.g., headache, dizziness, cranial nerve palsies) separately as secondary diagnoses.