Displ bimalleol fx l low leg, 7thN

This code signifies a left lower leg fracture involving both malleoli (the bony prominences on either side of the ankle), where the bone fragments are not properly aligned. It specifically indicates that this is a follow-up encounter for an open fracture (meaning the skin was broken) of a severe type (IIIA, IIIB, or IIIC), and the fracture has failed to heal properly (nonunion).

Use this code for patients presenting for ongoing treatment or evaluation of a previously sustained, severely open, displaced bimalleolar fracture of the left lower leg that has not united. This would include scenarios such as surgical intervention for nonunion, cast changes, or follow-up imaging to assess healing progress when nonunion is confirmed.

• Ensure documentation clearly specifies "left" lower leg and "bimalleolar" fracture.
• Verify the encounter is for a "subsequent" visit and that "nonunion" is explicitly documented.
• Confirm the original open fracture was classified as type IIIA, IIIB, or IIIC.