Path fx in oth disease, r fibula, subs for fx w nonunion

This code signifies a fracture of the right fibula that occurred due to an underlying disease process, not trauma, and is currently in a stage of nonunion. The patient is receiving active treatment for the nonunion or is experiencing complications related to it during this encounter.

This code is appropriate for subsequent encounters when a patient is being treated for a pathological fracture of the right fibula that has failed to heal (nonunion). Documentation should clearly state the pathological nature of the fracture, its location in the right fibula, and the ongoing management of the nonunion.

• Always sequence the underlying disease causing the pathological fracture first.
• Ensure documentation specifies "nonunion" and not just delayed healing.
• Distinguish from pathological fractures due to neoplasm (M84.5-) or osteoporosis (M80.-).