Unsp disp fx of second cervical vertebra, init for clos fx

This code signifies a fracture of the second cervical vertebra (C2), often referred to as the axis, where the bone fragments are not in their normal anatomical alignment. The specific type of fracture is not documented, and the skin over the fracture site remains intact. This code is used for the initial treatment phase of the injury.

Use this code when documentation indicates a displaced C2 fracture without further specification of the fracture type (e.g., odontoid, hangman's) and the injury is being treated for the first time. The medical record must explicitly state "displaced" and "closed fracture." This code is appropriate for emergency department visits or initial hospital admissions for this injury.

• Ensure documentation specifies "displaced" and "closed" for accurate code assignment.
• If the fracture type (e.g., odontoid, hangman's) is known, a more specific code from the S12.1- series should be used.
• This "A" initial encounter character is only used for the period of active treatment for the injury. Subsequent encounters will require different seventh characters.