Disp fx of nk of 3rd MC bone, l hand, subs for fx w malunion

This code signifies a fracture of the neck of the third metacarpal bone in the left hand, where the bone fragments are no longer in their normal anatomical alignment. This specific code is used when the patient is receiving follow-up care for this fracture, and the bone has healed in an imperfect or deformed position, known as malunion.

Apply this code for a patient presenting for ongoing treatment of a previously diagnosed displaced left third metacarpal neck fracture that has healed incorrectly. This would include scenarios such as physical therapy for a malunited fracture, or evaluation for corrective surgery due to the malunion. It is appropriate for any encounter after the initial treatment where malunion is the focus of care.

• Ensure documentation clearly specifies "left hand" and "third metacarpal."
• Verify the fracture is explicitly described as "displaced" and that "malunion" is noted.
• Confirm this is a subsequent encounter for the fracture, not the initial treatment.