| S12.300 | Unspecified displaced fracture of fourth cervical vertebra | NON-BILLABLE CODE |
| S12.300A | Unspecified displaced fracture of fourth cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.300B | Unspecified displaced fracture of fourth cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.300D | Unspecified displaced fracture of fourth cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.300G | Unspecified displaced fracture of fourth cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.300K | Unspecified displaced fracture of fourth cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.300S | Unspecified displaced fracture of fourth cervical vertebra, sequela | BILLABLE CODE |
| S12.301 | Unspecified nondisplaced fracture of fourth cervical vertebra | NON-BILLABLE CODE |
| S12.301A | Unspecified nondisplaced fracture of fourth cervical vertebra, initial encounter for closed fracture | BILLABLE CODE |
| S12.301B | Unspecified nondisplaced fracture of fourth cervical vertebra, initial encounter for open fracture | BILLABLE CODE |
| S12.301D | Unspecified nondisplaced fracture of fourth cervical vertebra, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.301G | Unspecified nondisplaced fracture of fourth cervical vertebra, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.301K | Unspecified nondisplaced fracture of fourth cervical vertebra, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.301S | Unspecified nondisplaced fracture of fourth cervical vertebra, sequela | BILLABLE CODE |
