Unsp physl fx upper end of l fibula, subs for fx w nonunion

This code indicates an unspecified fracture of the growth plate at the top of the left fibula that has not healed properly. It signifies a complication where the bone fragments have failed to unite after a previous encounter for the same injury.

This code is appropriate for follow-up visits where a patient is being managed for a previously diagnosed left fibula physeal fracture that is now complicated by nonunion. This includes scenarios such as ongoing conservative management for nonunion or preparation for surgical intervention to address the nonunion.

• Ensure documentation clearly specifies "nonunion" as the complication of the fracture.
• Verify the encounter is for a subsequent visit related to the fracture, not the initial treatment.
• Confirm the fracture location is the upper end of the left fibula and involves the physeal plate.