| M47.01 | Anterior spinal artery compression syndromes | NON-BILLABLE CODE |
| M47.011 | Anterior spinal artery compression syndromes, occipito-atlanto-axial region | BILLABLE CODE |
| M47.012 | Anterior spinal artery compression syndromes, cervical region | BILLABLE CODE |
| M47.013 | Anterior spinal artery compression syndromes, cervicothoracic region | BILLABLE CODE |
| M47.014 | Anterior spinal artery compression syndromes, thoracic region | BILLABLE CODE |
| M47.015 | Anterior spinal artery compression syndromes, thoracolumbar region | BILLABLE CODE |
| M47.016 | Anterior spinal artery compression syndromes, lumbar region | BILLABLE CODE |
| M47.019 | Anterior spinal artery compression syndromes, site unspecified | BILLABLE CODE |
| M47.02 | Vertebral artery compression syndromes | NON-BILLABLE CODE |
| M47.021 | Vertebral artery compression syndromes, occipito-atlanto-axial region | BILLABLE CODE |
| M47.022 | Vertebral artery compression syndromes, cervical region | BILLABLE CODE |
| M47.029 | Vertebral artery compression syndromes, site unspecified | BILLABLE CODE |
