S12.031 – Nondisplaced posterior arch fracture of first cervical vertebra
ICD-10-CM 2027 diagnosis code · Injuries to the neck
- Code
S12.031(claims format:S12031)- Description
- Nondisplaced posterior arch fracture of first cervical vertebra
- Short description
- Nondisp posterior arch fracture of first cervcal vertebra
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
- Block
- S10-S19 Injuries to the neck
- Parent codes
- S12 › S12.0 › S12.03
Billable codes under S12.031
S12.031 is a header code and cannot be used on claims. Choose the most specific code:
- S12.031A – Nondisplaced posterior arch fracture of first cervical vertebra, initial encounter for closed fractureBillable
- S12.031B – Nondisplaced posterior arch fracture of first cervical vertebra, initial encounter for open fractureBillable
- S12.031D – Nondisplaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with routine healingBillable
- S12.031G – Nondisplaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with delayed healingBillable
- S12.031K – Nondisplaced posterior arch fracture of first cervical vertebra, subsequent encounter for fracture with nonunionBillable
- S12.031S – Nondisplaced posterior arch fracture of first cervical vertebra, sequelaBillable
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care.
| Character | Meaning |
|---|---|
A | initial encounter for closed fracture |
B | initial encounter for open fracture |
D | subsequent encounter for fracture with routine healing |
G | subsequent encounter for fracture with delayed healing |
K | subsequent encounter for fracture with nonunion |
S | sequela |
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
S12 – Fracture of cervical vertebra and other parts of neck
- fracture of cervical neural arch
- fracture of cervical spine
- fracture of cervical spinous process
- fracture of cervical transverse process
- fracture of cervical vertebral arch
- fracture of neck
- A fracture not indicated as displaced or nondisplaced should be coded to displaced
- A fracture not indicated as open or closed should be coded to closed
S12.0 – Fracture of first cervical vertebra
- Atlas
Block S10-S19
- injuries of nape
- injuries of supraclavicular region
- injuries of throat
Index terms for S12.031
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in S12.03
Frequently asked questions
What is ICD-10 code S12.031?
S12.031 is the ICD-10-CM code for nondisplaced posterior arch fracture of first cervical vertebra, in the block S10-S19 (Injuries to the neck).
Is S12.031 a billable code?
No. S12.031 is a header code with more specific child codes; report one of the billable codes listed above.
What category does S12.031 belong to?
It belongs to category S12 – Fracture of cervical vertebra and other parts of neck.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.