ICD-10-CM > S00-T88 > S20-S29 > S23 > S23.1 > S23.14 > S23.140 S23.140 Subluxation of T6/T7 thoracic vertebra Non-Billable/Non-Specific Codes S23.140A..., initial encounterS23.140D..., subsequent encounterS23.140S..., sequela