ICD-10-CM > S00-T88 > S10-S19 > S13 > S13.1 > S13.11 > S13.110 S13.110 Subluxation of C0/C1 cervical vertebrae Non-Billable/Non-Specific Codes S13.110A..., initial encounterS13.110D..., subsequent encounterS13.110S..., sequela