Path fracture, unsp tibia and fibula, subs for fx w malunion

This code signifies a fracture of an unspecified tibia and/or fibula that occurred due to an underlying disease process, rather than trauma. The patient is in a subsequent phase of care for this pathological fracture, and the fracture has healed in an unsatisfactory position, resulting in a malunion. The "P" indicates a subsequent encounter for fracture with malunion.

Use this code when a patient presents for follow-up care, rehabilitation, or further treatment of a pathological fracture of the lower leg (tibia/fibula) that has healed incorrectly. Documentation should clearly state "pathological fracture," specify the tibia and/or fibula, and indicate that a malunion has occurred during a subsequent encounter.

• Ensure documentation specifies "pathological" to differentiate from traumatic fractures.
• Verify the encounter type is "subsequent" and that "malunion" is explicitly documented.
• Always sequence this code after the underlying disease causing the pathological fracture (e.g., osteoporosis, neoplasm).