M47.0 - Anterior spinal and vertebral artery compression syndromes
M47.02 - Vertebral artery compression syndromes
M47.021 - Vertebral artery compression syndromes, occipito-atlanto-axial region
M47.022 - Vertebral artery compression syndromes, cervical region
M47.029 - Vertebral artery compression syndromes, site unspecified