Displ pilon fx l tibia, subs for opn fx type I/2 w malunion

This code signifies a left tibial pilon fracture that was initially open (Type I or II) and has subsequently healed incorrectly, resulting in malunion. A pilon fracture involves the weight-bearing surface of the distal tibia, near the ankle joint. The "displaced" aspect indicates the bone fragments were not in their normal anatomical alignment.

Use this code for follow-up encounters where a patient is being treated for complications arising from a previously sustained open pilon fracture of the left tibia, specifically when the fracture has healed in a misaligned position. This would apply to patients presenting with pain, deformity, or functional limitations due to the malunion.

• Ensure documentation clearly states "malunion" as the complication of the healing fracture.
• Verify the fracture was initially an "open fracture type I or II" and located in the left tibia.
• Confirm this is a subsequent encounter for the fracture, not the initial treatment.