Nondisp fx of l tibial tuberosity, 7thN

This code describes a left tibial tuberosity fracture that is not displaced and has failed to heal properly, specifically in the context of a severe open fracture (Type IIIA, IIIB, or IIIC) that is currently undergoing treatment for this nonunion. The fracture site remains unhealed despite previous interventions, indicating a persistent gap or lack of bony bridge formation.

This code is used when a patient presents for follow-up care of a previously treated, severe open fracture of the left tibial tuberosity that has developed a nonunion. It applies during the active management phase of the nonunion, such as during subsequent surgical procedures, cast changes, or evaluations for bone stimulation.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" for treatment of this complication.
• Verify the original fracture was classified as an open fracture Type IIIA, IIIB, or IIIC.
• Do not use this code for initial encounters or for fractures that are healing normally.