Disp fx of l tibial tuberosity, subs for clos fx w nonunion

This code signifies a displaced fracture of the tibial tuberosity on the left leg that has failed to heal properly after initial treatment. The fracture remains closed, meaning the skin is intact over the injury site, but the bone fragments have not united. This indicates a complication in the healing process requiring further medical intervention.

Apply this code for follow-up encounters where a patient is being treated for a previously diagnosed displaced left tibial tuberosity fracture that has developed nonunion. This is appropriate when the fracture is still closed and the patient is undergoing ongoing management, such as considering or preparing for revision surgery, or receiving non-surgical interventions for the nonunion.

• Ensure documentation clearly states "nonunion" and specifies the left tibial tuberosity.
• Verify the fracture is explicitly documented as "displaced" and "closed" for accurate code assignment.
• This code is for subsequent encounters; an initial encounter for the same fracture would use a different code.