Oth nondisp fx of base of 1st MC bone, l hand, 7thP

This code signifies a fracture at the base of the first metacarpal bone in the left hand that was not displaced at the time of injury. The current encounter is for ongoing management of this fracture, specifically addressing a complication where the bone fragments have healed in an abnormal alignment.

This code is appropriate for follow-up visits where a patient is being treated for a previously diagnosed, nondisplaced fracture of the left thumb metacarpal base, and the physician documents that the fracture has healed or is healing with malunion. This indicates a suboptimal healing outcome requiring further clinical attention.

• Ensure documentation explicitly states "malunion" as a complication of the fracture healing.
• Verify the fracture location is the "base of the first metacarpal" and laterality is "left hand."
• Confirm this is a "subsequent encounter" for the fracture, not the initial treatment.