| S12.150A | Other traumatic displaced spondylolisthesis of second cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.150B | Other traumatic displaced spondylolisthesis of second cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.150D | Other traumatic displaced spondylolisthesis of second cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.150G | Other traumatic displaced spondylolisthesis of second cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.150K | Other traumatic displaced spondylolisthesis of second cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.150S | Other traumatic displaced spondylolisthesis of second cervical vertebra, sequela | BILLABLE CODE |
