Displ trimalleol fx l low leg, 7thM

This code signifies a complex fracture involving all three malleoli (medial, lateral, and posterior) of the left ankle, which has shifted out of alignment. The fracture is an open type I or II, meaning there's a break in the skin with minimal to moderate soft tissue damage, and the bone fragments have failed to heal together after an initial treatment.

Apply this code when documenting follow-up care for a patient with a previously treated, but now unhealed, displaced trimalleolar fracture of the left lower leg that was initially an open type I or II injury. This would include scenarios such as continued monitoring, further surgical intervention for nonunion, or management of complications related to the nonunion.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" for this specific type of open fracture.
• Verify the laterality (left leg) and the trimalleolar nature of the fracture are explicitly stated.
• Differentiate from initial encounters or malunion, as those would require different codes.