Displ bimalleol fx unsp low leg, 7thN

This code signifies a complex ankle fracture involving both the medial and lateral malleoli that has failed to heal properly, resulting in nonunion. The fracture is open, meaning the bone broke through the skin, and is classified as a severe type (IIIA, IIIB, or IIIC) indicating significant soft tissue damage. This specific code is used during follow-up care for this persistent healing complication.

Apply this code when documenting subsequent treatment for a patient with a previously diagnosed displaced bimalleolar fracture of an unspecified lower leg that has progressed to nonunion. This includes scenarios where the patient is undergoing further surgical intervention, cast changes, or other management for the nonunion of an open fracture type IIIA, IIIB, or IIIC. It is appropriate for any encounter after the initial treatment of the fracture.

• Ensure documentation clearly states "nonunion" and specifies the open fracture type (IIIA, IIIB, or IIIC).
• Verify that the encounter is "subsequent" and not the initial treatment for the fracture.
• Confirm the fracture involves both the medial and lateral malleoli and is displaced.