| S12.151A | Other traumatic nondisplaced spondylolisthesis of second cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.151B | Other traumatic nondisplaced spondylolisthesis of second cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.151D | Other traumatic nondisplaced spondylolisthesis of second cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.151G | Other traumatic nondisplaced spondylolisthesis of second cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.151K | Other traumatic nondisplaced spondylolisthesis of second cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.151S | Other traumatic nondisplaced spondylolisthesis of second cervical vertebra, sequela | BILLABLE CODE |
