ICD-10-CM > S00-T88 > S20-S29 > S23 > S23.1 > S23.15 S23.15 Subluxation and dislocation of T8/T9-T9/T10 thoracic vertebra Non-Billable/Non-Specific Codes S23.150Subluxation of T8/T9 thoracic vertebraS23.150A..., initial encounterS23.150D..., subsequent encounterS23.150S..., sequelaS23.151Dislocation of T8/T9 thoracic vertebraS23.151A..., initial encounterS23.151D..., subsequent encounterS23.151S..., sequelaS23.152Subluxation of T9/T10 thoracic vertebraS23.152A..., initial encounterS23.152D..., subsequent encounterS23.152S..., sequelaS23.153Dislocation of T9/T10 thoracic vertebraS23.153A..., initial encounterS23.153D..., subsequent encounterS23.153S..., sequela