Path fracture in oth disease, r foot, subs for fx w malunion

This code signifies a fracture of the right foot that occurred due to an underlying disease process, rather than trauma. The fracture is currently healing improperly, resulting in a malunion, and the patient is presenting for follow-up care related to this complication.

Apply this code when documentation specifies a pathological fracture of the right foot with evidence of malunion during a subsequent encounter. This is appropriate for patients receiving ongoing treatment or evaluation for the poorly healed fracture. Documentation should clearly state the anatomical site, the pathological nature of the fracture, and the malunion.

• Always sequence the underlying disease causing the pathological fracture first.
• Ensure documentation specifies "right foot" and "malunion" for accurate code assignment.
• Distinguish from nonunion (M84.4-) or routine healing (M84.5-).