Unsp disp fx of third cervcal vert, subs for fx w nonunion

This code signifies a follow-up encounter for a fracture of the third cervical vertebra (C3) that was initially displaced but is now failing to heal properly, resulting in a nonunion. The specific type of fracture is not documented.

Apply this code when a patient presents for ongoing management of a previously diagnosed C3 fracture that has not united and the specific fracture pattern (e.g., comminuted, transverse) is not specified in the medical record. This is used during subsequent visits after the initial treatment of the fracture.

• Ensure documentation clearly states "nonunion" and "subsequent encounter."
• Verify the fracture is of the third cervical vertebra (C3) and was initially displaced.
• Do not use for initial fracture treatment or for malunion, which is a different complication.