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S12.121Non-billableSave

S12.121 - Other nondisplaced dens fracture

ICD-10-CM Chapter 19: Injury, poisoning and certain other consequences of external causes · S10-S19 Injuries to the neck (S10-S19) · Subcategory of S12.12 · FY2027

Coding Guidance

S12.121 requires a 7th character. Report the code below that matches the documentation, for example A for initial encounter for closed fracture, B for initial encounter for open fracture, D for subsequent encounter for fracture with routine healing.

7th Character

The appropriate 7th character is to be added to all codes from subcategories S12.0-S12.6

Includes, Excludes and Coding Notes

IncludesFrom S12

Conditions this code covers.

  • 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
Code FirstFrom S12

Sequence the underlying condition before this code.

  • any associated cervical spinal cord injury (S14.0, S14.1-)
NotesFrom S12

Instructional notes from the ICD-10-CM tabular list.

  • 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
IncludesFrom S10-S19 Injuries to the neck (S10-S19)

Conditions this code covers.

  • injuries of nape
  • injuries of supraclavicular region
  • injuries of throat
Excludes 2 — Not Included HereFrom S10-S19 Injuries to the neck (S10-S19)

Not part of this code; report both codes when the patient has both conditions.

  • burns and corrosions (T20-T32)
  • effects of foreign body in esophagus (T18.1)
  • effects of foreign body in larynx (T17.3)
  • effects of foreign body in pharynx (T17.2)
  • effects of foreign body in trachea (T17.4)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
Excludes 2 — Not Included HereFrom Chapter S00-T88

Not part of this code; report both codes when the patient has both conditions.

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)
Use Additional CodeFrom Chapter S00-T88

Add a secondary code to identify the associated condition or cause when it is documented.

  • code to identify any retained foreign body, if applicable (Z18.-)
NotesFrom Chapter S00-T88

Instructional notes from the ICD-10-CM tabular list.

  • 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.

More Specific Codes (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→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with S12.121.