Oth osteopor w crnt path fx, l humer, subs for fx w nonunion

This code signifies a patient experiencing a pathological fracture of the left humerus due to osteoporosis, where the fracture is not healing properly (nonunion). This is not the initial treatment encounter for the fracture.

Apply this code for follow-up visits where a patient is being managed for a left humeral fracture caused by underlying osteoporosis, and the fracture has been documented as nonunion. Documentation should clearly state the fracture's location, its osteoporotic origin, and the nonunion status.

• Always sequence this code after the primary osteoporosis code (e.g., M81.0-).
• Ensure documentation explicitly states "nonunion" for the fracture; otherwise, a different subsequent encounter code may be appropriate.
• Distinguish from initial encounters (A) or subsequent encounters with routine healing (D) or delayed healing (P).