S12.11
Type II dens fracture
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 9 never code together
S10-S19block
Excludes2
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 6
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
Instructional notes 16
S12code
Notes
- 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
Includes
- 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
S12.1code
Inclusion terms
- Axis
S10-S19block
Includes
- injuries of nape
- injuries of supraclavicular region
- injuries of throat
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 6 same parent — S12.1
S12.10 Unspecified fracture of second cervical vertebra category S12.12 Other dens fracture category S12.13 Unsp traumatic spondylolisthesis of second cervical vertebra category S12.14 Type III traumatic spondylolysis of second cervcal vertebra category S12.15 Oth traumatic spondylolisthesis of second cervical vertebra category S12.19 Other fracture of second cervical vertebra category
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.