Pathological fracture, left fibula, subs for fx w delay heal

This code signifies a fracture of the left fibula that occurred due to a pre-existing disease process (e.g., osteoporosis, tumor) rather than trauma, and is currently experiencing delayed healing. The patient is receiving active treatment for the fracture during this encounter.

Apply this code for follow-up encounters where a patient is being treated for a pathological fracture of the left fibula that is not healing at the expected rate. Documentation should clearly state "pathological fracture," specify the left fibula, and indicate "delayed healing" or similar terminology, along with ongoing treatment.

• Requires a seventh character "G" for subsequent encounter with delayed healing.
• Always sequence this code after the underlying disease causing the pathological fracture.
• Distinguish from nonunion (seventh character "K") or malunion (seventh character "P").