Displaced transcondy fx l humerus, subs for fx w malunion

This code signifies a specific type of fracture involving the left humerus, located across the condyles, that has not healed correctly and is displaced. The "malunion" indicates that the bone fragments have united in an anatomically incorrect position, potentially leading to functional impairment or deformity. This code is used when the patient is seen for ongoing management of this complicated fracture.

This code is appropriate for follow-up encounters where a patient with a previously diagnosed displaced transcondylar fracture of the left humerus is being treated for a malunion. This could include visits for monitoring the malunion, planning for corrective surgery, or managing complications arising from the improper healing. It should not be used for the initial fracture encounter or for nonunion.

• Ensure documentation clearly specifies "malunion" and not "nonunion" (which has a different code series).
• Verify the fracture site is explicitly "transcondylar" and on the "left humerus."
• Confirm this is a "subsequent encounter" for the fracture care, not the initial treatment.