Unsp fx lower end of r humerus, subs for fx w malunion

This code signifies a fracture of the lower portion of the right upper arm bone that was not specified in more detail, and is now being treated for improper healing. Malunion indicates that the bone fragments have healed in an incorrect anatomical position, potentially leading to functional impairment.

Apply this code when a patient presents for follow-up care of a previously sustained, unspecified fracture of the distal right humerus that has healed incorrectly. This would be used for subsequent visits where the malunion is being addressed, such as for evaluation, physical therapy, or surgical planning for corrective osteotomy.

• Ensure documentation clearly states "malunion" and specifies the "right humerus, lower end."
• This code is for subsequent encounters; an initial encounter for the fracture would use a different seventh character.
• Always review the medical record for laterality and the specific part of the humerus affected.