Nondisp fx of med malleolus of l tibia, 7thN

This code signifies a non-displaced fracture of the inner ankle bone (medial malleolus) of the left tibia that has failed to heal properly (nonunion). The initial injury was an open fracture, meaning the skin was broken, and was classified as a severe type (IIIA, IIIB, or IIIC). This code is used during follow-up care for this specific complication.

Use this code for patients presenting for ongoing management of a left medial malleolus nonunion, where the original injury was a severe open fracture. This applies to subsequent visits after the initial treatment of the fracture, when the nonunion has been identified and is being addressed.

• Ensure documentation clearly states "nonunion" and specifies the "left" medial malleolus.
• Verify the original fracture was an "open fracture type IIIA, IIIB, or IIIC" as this impacts the seventh character.
• This code is for subsequent encounters; an initial encounter for the nonunion would use a different seventh character.