Nondisp commnt fx shaft of unsp tibia, 7thN

This code signifies a comminuted fracture of the tibial shaft that is not displaced, meaning the bone fragments are still in their anatomical alignment, but the bone is broken into multiple pieces. This specific code is used during the healing phase when the fracture, initially an open fracture of severe type (IIIA, IIIB, or IIIC), has failed to unite after the initial treatment.

Apply this code for follow-up encounters when a patient with a previously diagnosed severe open comminuted tibial shaft fracture (type IIIA, IIIB, or IIIC) is experiencing nonunion. This indicates that the fracture has not healed as expected and further intervention may be required.

• Ensure documentation clearly specifies "nondisplaced" and "comminuted" for the tibial shaft fracture.
• Verify the original injury was an open fracture classified as type IIIA, IIIB, or IIIC.
• Confirm the encounter is for a "subsequent encounter" and that "nonunion" is explicitly documented.