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

This code signifies a fracture of the left femur that occurred due to an underlying disease process, rather than significant trauma. The patient is currently in a phase of treatment where the fracture is not healing at the expected rate.

Apply this code for a patient receiving ongoing care for a left femoral pathological fracture that is exhibiting delayed healing. Documentation should clearly indicate the pathological nature of the fracture and the current status of delayed union or nonunion. This code is used after the initial treatment phase.

• Ensure documentation specifies "pathological" and "delayed healing" for the left femur.
• Always sequence this code after the underlying disease causing the pathological fracture (e.g., osteoporosis, neoplasm).
• Distinguish from routine follow-up for a healing fracture (M84.452D) or nonunion (M84.452K).