Nondisp Maisonneuve's fx unsp leg, 7thN

This code describes a Maisonneuve's fracture, which is a specific type of ankle injury involving a spiral fracture of the proximal fibula with an associated ankle sprain and/or medial malleolar fracture. In this instance, the fracture fragments are in their normal anatomical alignment (nondisplaced), and the injury is to an unspecified leg. The "subsequent encounter" indicates ongoing treatment for a previously diagnosed open fracture, specifically one classified as Type IIIA, IIIB, or IIIC, which has failed to heal properly (nonunion).

Use this code for follow-up care of a patient with a documented Maisonneuve's fracture that was initially an open fracture of a severe type (IIIA, IIIB, or IIIC) and is now complicated by nonunion. This would apply when the patient is receiving treatment for the nonunion, such as bone grafting, internal fixation revision, or other interventions aimed at promoting healing. This code is appropriate for encounters after the initial treatment of the acute fracture.

• Ensure documentation clearly specifies "nondisplaced" and "Maisonneuve's fracture."
• Verify the original fracture was an "open fracture type IIIA, IIIB, or IIIC" and that "nonunion" is explicitly stated.
• Do not use for initial treatment of the fracture or for malunion; nonunion must be present.