Oth fx shaft of rad, unsp arm, subs for clos fx w malunion

This code signifies a fracture of the main part (shaft) of the radius bone in an unspecified arm, which has previously been treated but has healed in an unsatisfactory position (malunion). The fracture itself is closed, meaning the skin was not broken at the time of the initial injury.

Use this code when a patient presents for follow-up care of a previously diagnosed and treated closed radial shaft fracture that has healed with a noticeable deformity or angulation. This indicates the patient is receiving ongoing management for the complications of the initial fracture, specifically the malunion.

• Ensure documentation clearly specifies "malunion" and that the fracture was closed.
• Verify the encounter is for follow-up care related to the malunion, not the initial injury.
• If the arm is specified (left or right), a more specific code should be chosen.