Oth fx l low leg, subs for opn fx type 3A/B/C w nonunion

This code signifies a persistent failure of a severe open fracture in the left lower leg to heal, specifically when the bone ends have not united after a period of expected healing. The "open" nature indicates the bone broke through the skin, and the "IIIA, IIIB, or IIIC" classification points to significant soft tissue damage and contamination. This code is used during follow-up care for such a complicated nonunion.

This code is appropriate for subsequent encounters where a patient is being treated for a previously diagnosed open fracture of the left lower leg (tibia and/or fibula) that has failed to heal and is classified as a Gustilo-Anderson Type IIIA, IIIB, or IIIC. This would include scenarios like ongoing wound care, surgical intervention for nonunion, or monitoring the progression of nonunion.

• Ensure documentation clearly specifies the fracture is of the left lower leg and that nonunion is present.
• Verify the original fracture was classified as an open fracture Type IIIA, IIIB, or IIIC.
• This code is for subsequent encounters; an initial encounter for the fracture or nonunion would use a different code.