| S12.040 | Displaced lateral mass fracture of first cervical vertebra | NON-BILLABLE CODE |
| S12.040A | Displaced lateral mass fracture of first cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.040B | Displaced lateral mass fracture of first cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.040D | Displaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.040G | Displaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.040K | Displaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.040S | Displaced lateral mass fracture of first cervical vertebra, sequela | BILLABLE CODE |
| S12.041 | Nondisplaced lateral mass fracture of first cervical vertebra | NON-BILLABLE CODE |
| S12.041A | Nondisplaced lateral mass fracture of first cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.041B | Nondisplaced lateral mass fracture of first cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.041D | Nondisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.041G | Nondisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.041K | Nondisplaced lateral mass fracture of first cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.041S | Nondisplaced lateral mass fracture of first cervical vertebra, sequela | BILLABLE CODE |
