Pathological fracture, left ulna, subs for fx w malunion

This code signifies a fracture of the left ulna that occurred due to an underlying disease process, rather than trauma, and has healed incorrectly, resulting in a malunion. The patient is currently receiving routine follow-up care during the healing phase of this malunited pathological fracture.

Apply this code when documentation indicates a patient is being seen for ongoing management of a left ulnar fracture that was caused by a pathological condition (e.g., osteoporosis, tumor) and has healed in an anatomically incorrect position. This code is appropriate for follow-up visits after initial treatment, where the malunion is being monitored or further treatment for the malunion is being planned.

• Requires documentation of both the pathological nature of the fracture and the presence of malunion.
• Ensure the encounter is for follow-up care, not initial treatment or active treatment of a nonunion.
• Always sequence this code after the underlying pathological condition that caused the fracture.