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

This code signifies a fracture affecting the lower portion of the left thigh bone, specifically an open fracture (Type I or II) that has healed incorrectly (malunion). This particular encounter is for follow-up care or treatment related to this previously sustained and poorly healed injury.

Apply this code when documenting a patient presenting for ongoing management of a malunited open fracture of the distal left femur. This includes scenarios such as surgical correction of the malunion, physical therapy for functional deficits, or monitoring for complications related to the improper healing.

• Ensure documentation clearly specifies "malunion" and an "open fracture" (Type I or II) for the left distal femur.
• Verify this is a "subsequent encounter" for the fracture, not the initial treatment.
• Always code the underlying cause of the fracture if known and documented.