S12.121 — Other nondisplaced dens fracture
Is S12.121 billable?
No — S12.121 is a non-billable header code. S12.121 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 6 billable codes beneath S12.121.
Billable codes under this header
- S12.121AOther nondisplaced dens fracture, initial encounter for closed fracture
- S12.121BOther nondisplaced dens fracture, initial encounter for open fracture
- S12.121DOther nondisplaced dens fracture, subsequent encounter for fracture with routine healing
- S12.121GOther nondisplaced dens fracture, subsequent encounter for fracture with delayed healing
- S12.121KOther nondisplaced dens fracture, subsequent encounter for fracture with nonunion
- S12.121SOther nondisplaced dens fracture, sequela
S12.121 at a glance
| Code | S12.121 |
|---|---|
| Description | Other nondisplaced dens fracture |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S12.121 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to S12.121. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Fracture, traumatic › neck › cervical vertebra › second › dens › specified type NEC › nondisplaced (abduction) (adduction) (separation)
Code first — inherited from S12
The underlying condition below must be sequenced before S12.121. S12.121 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside S12.121 to fully describe the condition. S12.121 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S12.121, but a patient may have both at the same time. When documentation supports it, S12.121 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S10-S19
The conditions below are not part of S12.121, but a patient may have both at the same time. When documentation supports it, S12.121 and the excluded code may both be reported.
What codes fall under S12.121? (6)
- S12.121AOther nondisplaced dens fracture, initial encounter for closed fracture
- S12.121BOther nondisplaced dens fracture, initial encounter for open fracture
- S12.121DOther nondisplaced dens fracture, subsequent encounter for fracture with routine healing
- S12.121GOther nondisplaced dens fracture, subsequent encounter for fracture with delayed healing
- S12.121KOther nondisplaced dens fracture, subsequent encounter for fracture with nonunion
- S12.121SOther nondisplaced dens fracture, sequela
How long has S12.121 existed?
S12.121 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.