Disp fx of unsp tibial tuberosity, 7thN

This code signifies a non-healing fracture of the tibial tuberosity that was initially an open fracture of severe type (IIIA, IIIB, or IIIC). The fracture fragments are no longer in their anatomical alignment, and the bone has failed to unite after a previous treatment attempt.

Apply this code when documenting a patient presenting for follow-up care of a previously treated, displaced, open tibial tuberosity fracture (Gustilo-Anderson type IIIA, IIIB, or IIIC) that has progressed to nonunion. This indicates a complication in the healing process requiring further intervention.

• Ensure documentation clearly specifies "nonunion" and the Gustilo-Anderson classification (IIIA, IIIB, or IIIC) of the initial open fracture.
• This code is for subsequent encounters; an initial encounter for the fracture would use a different code.
• Verify laterality if specified in the clinical notes, as this code is for an "unspecified" tuberosity.