Nondisp bimalleol fx l low leg, subs for clos fx w nonunion

This code signifies a fracture involving both the medial and lateral malleoli of the left ankle, where the bone fragments remain in their anatomical position. The patient is in the healing phase, but the fracture is failing to unite, and the skin over the fracture site is intact.

Use this code for follow-up encounters of a patient with a previously diagnosed nondisplaced bimalleolar fracture of the left lower leg who is experiencing nonunion. This applies when the fracture has not healed within the expected timeframe and there is no open wound.

• Ensure documentation specifies "nondisplaced" and "bimalleolar" for the left lower leg.
• Confirm the encounter is for follow-up care of a nonunion, not initial treatment or routine healing.
• Always check for laterality (left vs. right) and the specific type of fracture.