Path fx in neopltc dis, left radius, subs for fx w malunion

This code signifies a pathological fracture of the left radius that occurred due to an underlying neoplastic (cancerous) process. The fracture is currently in a state of malunion, meaning it has healed in an unsatisfactory position, and the patient is presenting for follow-up care related to this specific fracture.

Use this code for patients with a documented pathological fracture of the left radius caused by cancer, who are receiving ongoing treatment or evaluation for the malunion of that fracture. Documentation should clearly indicate the neoplastic etiology, the specific bone involved (left radius), and the current status as a malunion in a subsequent encounter.

• Always sequence the underlying neoplasm code first, followed by this code.
• Ensure documentation specifies "malunion" and not "nonunion" (M84.534N) or routine healing (M84.534D, G, S).
• Verify laterality (left radius) is clearly documented to avoid coding errors.