Unsp fx shaft of right ulna, subs for clos fx w nonunion

This code signifies a non-healing fracture of the shaft of the right ulna, where the initial injury was a closed fracture. "Nonunion" indicates that the bone fragments have failed to unite after a sufficient period, requiring further medical intervention. This is a subsequent encounter, meaning the patient is receiving ongoing care for this specific complication.

Apply this code when a patient presents for follow-up care or treatment of a right ulnar shaft fracture that has been diagnosed with nonunion. This includes scenarios such as evaluation for surgical intervention (e.g., bone grafting, internal fixation revision) or continued conservative management for the non-healing fracture. It is used after the initial treatment phase has concluded.

• Ensure documentation clearly states "nonunion" of a closed right ulnar shaft fracture.
• Verify this is a subsequent encounter, not the initial treatment or a sequela.
• Always look for laterality (right) and the specific bone (ulna shaft) in the documentation.