Oth fx lower end of unsp femur, subs for clos fx w malunion

This code indicates a fracture of the lower end of the femur, not otherwise specified, that has previously been treated but is now presenting with malunion. Malunion signifies that the bone has healed in an unsatisfactory position, potentially leading to functional impairment or deformity. This specific encounter is for ongoing care related to this closed fracture with malunion.

Use this code when a patient presents for follow-up care, evaluation, or treatment of a previously sustained closed fracture of the distal femur that has healed in a misaligned position. This applies to situations where the malunion itself is the focus of the current encounter, such as for assessment of range of motion, pain management, or planning for corrective procedures.

• Ensure documentation clearly states "malunion" and specifies the "lower end of femur."
• Verify the encounter is for a "subsequent encounter" and the fracture was "closed."
• Do not use for initial treatment of the fracture or for nonunion.