Oth fx shaft of unsp femur, subs for clos fx w nonunion

This code signifies a non-healing fracture located in the shaft of an unspecified femur, where the initial injury was a closed fracture. "Nonunion" indicates that the bone fragments have failed to unite after a typical healing period, requiring further medical intervention.

Apply this code when a patient presents for follow-up care of a previously diagnosed closed femoral shaft fracture that has not healed. This is appropriate for subsequent encounters where nonunion has been confirmed and is being actively managed.

• Ensure documentation clearly states "nonunion" and specifies the femoral shaft as the fracture site.
• Verify the initial fracture was closed; if open, a different code would be required.
• This code is for subsequent encounters; use an initial encounter code for the original injury.