| ICD-10 Code | Description |
| S12.030A | Displaced posterior arch fracture of first cervical vertebra, initial encounter for closed fracture |
| S12.030B | Displaced posterior arch fracture of first cervical vertebra, initial encounter for open fracture |
| S12.030D | Displaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with routine healing |
| S12.030G | Displaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with delayed healing |
| S12.030K | Displaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with nonunion |
| S12.030S | Displaced posterior arch fracture of first cervical vertebra, sequela |
| S12.031A | Nondisplaced posterior arch fracture of first cervical vertebra, initial encounter for closed fracture |
| S12.031B | Nondisplaced posterior arch fracture of first cervical vertebra, initial encounter for open fracture |
| S12.031D | Nondisplaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with routine healing |
| S12.031G | Nondisplaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with delayed healing |
| S12.031K | Nondisplaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with nonunion |
| S12.031S | Nondisplaced posterior arch fracture of first cervical vertebra, sequela |
