Pathological fracture, right humerus, subs for fx w malunion

This code signifies a pathological fracture of the right humerus that is currently undergoing treatment for a malunion. A pathological fracture occurs due to a disease process weakening the bone, rather than from trauma. Malunion indicates that the fracture has healed, but in an unsatisfactory position or alignment.

Use this code for follow-up encounters where a patient is being treated for a right humeral pathological fracture that has healed with malunion. Documentation should clearly state the presence of a pathological fracture, its location on the right humerus, and that the current encounter addresses the malunion. This code is appropriate when the patient is actively receiving care for the malunion, such as physical therapy, casting, or surgical planning for corrective osteotomy.

• Always sequence the underlying condition causing the pathological fracture (e.g., osteoporosis, neoplasm) before this code.
• Ensure documentation specifies "malunion" and not "nonunion" (which has different codes) or "delayed healing."
• Verify laterality (right humerus) and the encounter type (subsequent encounter for fracture with malunion) are clearly supported.