| Full description | Nondisplaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with nonunion |
| Billable | Yes |
| Chapter | Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88) |
| Section | Injuries to the neck (S10-S19) |
| Parent code | S12.031 — Nondisp posterior arch fracture of first cervcal vertebra |