ICD-10-CM > S00-T88 > S10-S19 > S13 > S13.1 > S13.14 > S13.140 S13.140 Subluxation of C3/C4 cervical vertebrae Non-Billable/Non-Specific Codes S13.140A..., initial encounterS13.140D..., subsequent encounterS13.140S..., sequela