Oth fx lower end r femr, subs for opn fx type I/2 w malunion

This code signifies a previously sustained fracture of the lower end of the right femur, which was an open fracture classified as Type I or II, and is now presenting with malunion. Malunion indicates that the bone has healed, but in an incorrect anatomical position or alignment.

This code is appropriate when a patient is seen for ongoing management or complications related to a malunited open fracture (Type I or II) of the distal right femur. This could include evaluation for corrective surgery, physical therapy for functional limitations, or pain management due to the malunion.

• Requires a seventh character of 'Q' for subsequent encounter with malunion.
• Ensure documentation specifies an open fracture type I or II and confirms malunion.
• Do not use for initial treatment or for nonunion; separate codes exist for those scenarios.