Oth fx shaft of l femur, subs for opn fx type I/2 w nonunion

This code signifies a non-healing fracture of the shaft of the left femur, specifically an open fracture type I or II, that is being treated during a subsequent encounter. "Nonunion" indicates that the bone fragments have failed to heal together after a sufficient period.

Apply this code when documenting ongoing care for a patient with a previously sustained open fracture (Type I or II) of the left femoral shaft that has progressed to nonunion. This would be used for follow-up visits, surgical interventions for nonunion, or other management of the unhealed fracture.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" for this specific fracture.
• Verify the laterality (left femur) and the fracture type (shaft, open type I or II) are accurately documented.
• Do not use this code for initial encounters or for malunion; a different code would be appropriate in those scenarios.