Disp fx of shaft of 1st MC bone, l hand, 7thP

This code signifies a fracture of the shaft of the first metacarpal bone (thumb) in the left hand, where the bone fragments are no longer in their normal alignment. The encounter is for ongoing management of this fracture, specifically addressing a complication where the bone has healed, but in an incorrect or deformed position.

This code is appropriate for follow-up visits where a patient is being treated for a previously diagnosed displaced fracture of the left first metacarpal shaft, and the physician documents that the fracture has healed with malunion. This could involve assessment for corrective surgery, physical therapy to address functional deficits due to the malunion, or ongoing monitoring.

• Ensure documentation clearly specifies "left hand" and "first metacarpal shaft."
• Verify that the encounter is for a "subsequent encounter" and that "malunion" is explicitly documented as a complication.
• Distinguish from nonunion (failure to heal) or delayed union (healing taking longer than expected).