ICD-10-CM > S00-T88 > S30-S39 > S33 > S33.1 > S33.11 S33.11 Subluxation and dislocation of L1/L2 lumbar vertebra Non-Billable/Non-Specific Codes S33.110Subluxation of L1/L2 lumbar vertebraS33.110A..., initial encounterS33.110D..., subsequent encounterS33.110S..., sequelaS33.111Dislocation of L1/L2 lumbar vertebraS33.111A..., initial encounterS33.111D..., subsequent encounterS33.111S..., sequela