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

This code indicates a fracture in the upper portion of the ulna, the larger bone in the forearm, that is not specifically categorized as another type of fracture. The fracture is closed, meaning the skin is intact, and the bone fragments have failed to heal together after a prior treatment attempt. This specific code is for a subsequent encounter for ongoing management of this nonunion.

This code is appropriate for follow-up visits where a patient is being treated for a previously diagnosed, non-healing closed fracture of the proximal ulna. This includes scenarios such as monitoring the nonunion, planning for revision surgery, or managing complications related to the nonunion. It should be used when the fracture site has not united and the patient is past the initial healing phase.

• Ensure documentation clearly states "nonunion" and that the fracture is closed.
• Verify the encounter is for subsequent care, not the initial treatment of the fracture.
• Confirm the fracture location is the upper end of the ulna and not otherwise specified.