ICD-10-CM > S00-T88 > S10-S19 > S13 > S13.1 > S13.17 S13.17 Subluxation and dislocation of C6/C7 cervical vertebrae Non-Billable/Non-Specific Codes S13.170Subluxation of C6/C7 cervical vertebraeS13.170A..., initial encounterS13.170D..., subsequent encounterS13.170S..., sequelaS13.171Dislocation of C6/C7 cervical vertebraeS13.171A..., initial encounterS13.171D..., subsequent encounterS13.171S..., sequela