Displ trimalleol fx l low leg, subs for clos fx w malunion

This code signifies a complex fracture involving all three malleoli (medial, lateral, and posterior) of the left ankle, which has been previously treated but is now experiencing malunion. "Displaced" indicates the bone fragments are not in their normal anatomical alignment, and "subsequent encounter" means the patient is receiving follow-up care for the healing process.

Use this code for patients presenting for ongoing management of a left trimalleolar fracture where the initial treatment was closed (non-surgical), and imaging or clinical assessment confirms malunion. This would apply to follow-up visits, physical therapy, or further evaluation for corrective measures after the initial treatment phase.

• Ensure documentation clearly specifies "left" lower leg and confirms a trimalleolar fracture with displacement.
• Verify that the encounter is for a "subsequent" phase of care and that the fracture is being managed as "closed" with evidence of "malunion."
• Do not use this code for initial treatment, open fractures, or if the fracture is healing normally without malunion.