Pathological fracture, left fibula, subs for fx w malunion

This code signifies a fracture of the left fibula that occurred due to an underlying disease process, rather than trauma. The fracture is currently in a healing phase, but with evidence of malunion, meaning the bone fragments have healed in an incorrect anatomical position. This code is used for follow-up care after the initial treatment of the pathological fracture.

Apply this code when a patient presents for ongoing management of a previously treated pathological left fibula fracture that has healed improperly. Documentation should clearly state "pathological fracture," specify the left fibula, and indicate "malunion" during a "subsequent encounter" for care. This code is appropriate for clinic visits, physical therapy, or other services related to addressing the malunion.

• Ensure documentation explicitly states "pathological fracture" and the specific bone (left fibula).
• Verify the encounter type is "subsequent" and that "malunion" is present. Do not use for initial treatment or nonunion.
• Always sequence this code after the underlying disease causing the pathological fracture (e.g., osteoporosis, neoplasm) if still active and relevant to the encounter.