Unsp nondisp fx of second cervical vertebra, init

This code signifies a fracture of the second cervical vertebra (C2), specifically a nondisplaced fracture where the bone fragments remain in their anatomical alignment. The "unspecified" nature indicates that the exact type of C2 fracture (e.g., odontoid, hangman's) is not documented. This code is for the initial treatment phase of a closed fracture, meaning the skin remains intact over the fracture site.

Use this code for patients presenting with a newly diagnosed, nondisplaced C2 fracture when the specific anatomical location within C2 is not detailed in the medical record. Documentation should clearly state "nondisplaced C2 fracture" and confirm that it is a closed injury. This code is appropriate for the initial encounter for treatment of the fracture.

• Ensure documentation specifies "nondisplaced" and "closed fracture" for accurate coding.
• If the specific type of C2 fracture (e.g., odontoid, hangman's) is known, a more specific code from the S12.1- series should be used.
• The "A" seventh character indicates an initial encounter for active treatment; subsequent encounters will require different seventh characters.