Disp fx of lateral malleolus of unsp fibula, 7thR

This code signifies a previously treated fracture of the outer ankle bone (lateral malleolus) that has healed in an imperfect or misaligned position (malunion). The original injury was an open fracture, meaning the bone broke through the skin, and was classified as a severe type (IIIA, IIIB, or IIIC) according to the Gustilo-Anderson classification. This code is used during follow-up care for this specific complication.

Apply this code when documenting ongoing management or evaluation of a patient who has developed a malunion following a severe open lateral malleolus fracture. This would include scenarios such as assessing functional limitations, planning corrective surgery, or monitoring pain related to the malunion. It is used for subsequent encounters after the initial treatment of the fracture.

• Ensure documentation clearly specifies "malunion" as the complication of the fracture.
• Verify the original fracture was an open fracture type IIIA, IIIB, or IIIC.
• This code is for subsequent encounters, not the initial treatment of the fracture or the initial diagnosis of malunion.