Oth fx shaft of r ulna, subs for opn fx type I/2 w nonunion

This code signifies a fracture of the shaft of the right ulna, which is not further specified as comminuted, segmental, or spiral, and is being treated in a subsequent encounter. The original injury was an open fracture classified as Type I or II, and the current clinical presentation indicates a nonunion, meaning the bone fragments have failed to heal together.

Use this code when documenting follow-up care for a patient with a previously diagnosed open Type I or II fracture of the right ulnar shaft that has not healed. This applies to situations where the patient is undergoing continued management for the nonunion, such as further surgical intervention, bone grafting, or prolonged immobilization.

• Ensure documentation clearly specifies "nonunion" and that the initial fracture was an "open fracture type I or II."
• Verify the laterality is "right ulna" and the fracture location is the "shaft."
• This code is for subsequent encounters; an initial encounter for this specific nonunion would use a different code.