Displaced pilon fx left tibia, subs for clos fx w nonunion

This code signifies a fracture of the distal end of the left tibia, specifically involving the weight-bearing surface of the ankle joint (pilon fracture), which has shifted out of its normal alignment. The fracture has not healed properly, indicating a nonunion, and the patient is presenting for follow-up care or treatment after the initial encounter, with the skin over the fracture remaining intact.

Use this code for patients presenting for ongoing management of a previously diagnosed displaced pilon fracture of the left tibia that has failed to unite. This includes scenarios such as follow-up appointments for non-operative management of nonunion, or pre-operative evaluation for surgical intervention to address the nonunion. It is appropriate when the initial treatment has concluded, and the focus is now on the persistent nonunion.

• Ensure documentation clearly states "nonunion" and specifies the "left tibia" and "pilon fracture."
• Verify that the encounter is a "subsequent encounter" and not the initial treatment or an active treatment for a routine healing fracture.
• Confirm the fracture is "closed" (skin intact) to differentiate from open fractures.