Unsp nondisp fx of 2nd cervcal vert, subs for fx w nonunion

This code signifies an ongoing treatment for a fracture of the second cervical vertebra (C2) that is not displaced and has not healed properly (nonunion). It indicates that the patient is receiving care for this specific complication after the initial treatment phase.

Use this code for follow-up encounters where a patient is being managed for a previously diagnosed, nondisplaced C2 fracture that has failed to unite. Documentation should clearly state "nonunion" of the C2 fracture and indicate that the encounter is for continued care of this specific condition.

• Ensure documentation explicitly states "nonunion" and the specific cervical vertebra involved (C2).
• Do not use this code for initial fracture treatment or for malunion; a different subsequent encounter code would apply.
• Always sequence this code after any acute conditions or complications being addressed during the same encounter, if applicable.