| S12.550 | Other traumatic displaced spondylolisthesis of sixth cervical vertebra | NON-BILLABLE CODE |
| S12.550A | Other traumatic displaced spondylolisthesis of sixth cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.550B | Other traumatic displaced spondylolisthesis of sixth cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.550D | Other traumatic displaced spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.550G | Other traumatic displaced spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.550K | Other traumatic displaced spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.550S | Other traumatic displaced spondylolisthesis of sixth cervical vertebra, sequela | BILLABLE CODE |
| S12.551 | Other traumatic nondisplaced spondylolisthesis of sixth cervical vertebra | NON-BILLABLE CODE |
| S12.551A | Other traumatic nondisplaced spondylolisthesis of sixth cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.551B | Other traumatic nondisplaced spondylolisthesis of sixth cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.551D | Other traumatic nondisplaced spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.551G | Other traumatic nondisplaced spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.551K | Other traumatic nondisplaced spondylolisthesis of sixth cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.551S | Other traumatic nondisplaced spondylolisthesis of sixth cervical vertebra, sequela | BILLABLE CODE |
