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

This code signifies a left lower leg fracture involving both the medial and lateral malleoli, where the bone fragments are not properly aligned. The patient is in a healing phase following initial treatment, but the fracture has healed incorrectly, resulting in a malunion.

This code is appropriate for follow-up encounters where a patient with a previously treated bimalleolar fracture of the left lower leg is found to have a malunion, and the fracture is still considered closed. This would apply during clinic visits for assessment of the malunion, or during preparations for corrective surgery.

• Ensure documentation clearly states "left lower leg," "bimalleolar," "displaced," and "malunion" for accurate code assignment.
• Verify that the encounter is for a subsequent visit and not the initial treatment of the fracture.
• Confirm the fracture is documented as "closed" to avoid using codes for open fractures.