Path fracture, right finger(s), subs for fx w malunion

This code describes a fracture of one or more bones in the right finger(s) that occurred due to an underlying disease process (pathological) rather than trauma. The fracture is currently healing, but the bone fragments have united in an abnormal position, leading to a deformity or functional impairment (malunion). This code is used for follow-up care after the initial treatment of the fracture.

Use this code for patients presenting for ongoing management of a right finger pathological fracture that has healed with malunion. Documentation should clearly state "pathological fracture," specify the right finger(s), and indicate "malunion" as a complication of healing. This code is appropriate for subsequent encounters, such as follow-up appointments, physical therapy, or surgical correction of the malunion.

• Always sequence this code after the underlying disease causing the pathological fracture (e.g., osteoporosis, neoplasm).
• Ensure documentation specifies "right finger(s)" and not just "finger" to support laterality.
• Distinguish from nonunion (M84.444N), where the fracture has failed to heal, versus malunion, where it has healed incorrectly.