ICD-10-CM > S00-T88 > S20-S29 > S23 > S23.1 > S23.13 > S23.130 S23.130 Subluxation of T4/T5 thoracic vertebra Non-Billable/Non-Specific Codes S23.130A..., initial encounterS23.130D..., subsequent encounterS23.130S..., sequela