| S12.54XA | Type III traumatic spondylolisthesis of sixth cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.54XB | Type III traumatic spondylolisthesis of sixth cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.54XD | Type III traumatic spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.54XG | Type III traumatic spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.54XK | Type III traumatic spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.54XS | Type III traumatic spondylolisthesis of sixth cervical vertebra, sequela | BILLABLE CODE |
