Oth fx upper end of unsp ulna, subs for clos fx w malunion

This code signifies a fracture in the upper portion of the ulna (one of the two long bones in the forearm) that is not further specified as to its exact location, and is being treated for a malunion. A malunion means the fracture has healed, but in an unsatisfactory or deformed position. This particular encounter is for follow-up care of a closed fracture (skin intact) that has healed incorrectly.

Use this code when a patient presents for ongoing management or evaluation of a previously sustained, unspecified closed fracture of the proximal ulna that has resulted in a malunion. This would include scenarios where the physician is assessing the degree of malunion, planning corrective surgery, or managing symptoms related to the malunion. It is appropriate for subsequent encounters after the initial treatment of the fracture.

• Ensure documentation clearly states "malunion" and that the fracture was closed.
• Verify the encounter is not for the initial treatment of the fracture or for nonunion.
• Confirm the fracture location is the upper end of the ulna, even if not precisely specified.