| S12.110 | Anterior displaced Type II dens fracture | NON-BILLABLE CODE |
| S12.110A | Anterior displaced Type II dens fracture, initial encounter for closed fracture | BILLABLE CODE |
| S12.110B | Anterior displaced Type II dens fracture, initial encounter for open fracture | BILLABLE CODE |
| S12.110D | Anterior displaced Type II dens fracture, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.110G | Anterior displaced Type II dens fracture, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.110K | Anterior displaced Type II dens fracture, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.110S | Anterior displaced Type II dens fracture, sequela | BILLABLE CODE |
| S12.111 | Posterior displaced Type II dens fracture | NON-BILLABLE CODE |
| S12.111A | Posterior displaced Type II dens fracture, initial encounter for closed fracture | BILLABLE CODE |
| S12.111B | Posterior displaced Type II dens fracture, initial encounter for open fracture | BILLABLE CODE |
| S12.111D | Posterior displaced Type II dens fracture, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.111G | Posterior displaced Type II dens fracture, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.111K | Posterior displaced Type II dens fracture, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.111S | Posterior displaced Type II dens fracture, sequela | BILLABLE CODE |
| S12.112 | Nondisplaced Type II dens fracture | NON-BILLABLE CODE |
| S12.112A | Nondisplaced Type II dens fracture, initial encounter for closed fracture | BILLABLE CODE |
| S12.112B | Nondisplaced Type II dens fracture, initial encounter for open fracture | BILLABLE CODE |
| S12.112D | Nondisplaced Type II dens fracture, subsequent encounter for fracture with routine healing | BILLABLE CODE |
| S12.112G | Nondisplaced Type II dens fracture, subsequent encounter for fracture with delayed healing | BILLABLE CODE |
| S12.112K | Nondisplaced Type II dens fracture, subsequent encounter for fracture with nonunion | BILLABLE CODE |
| S12.112S | Nondisplaced Type II dens fracture, sequela | BILLABLE CODE |
