Oth disp fx of upper end unsp humer, subs for fx w nonunion

This code signifies a follow-up visit for a patient who previously sustained an "other" type of displaced fracture to the upper part of an unspecified humerus, and the fracture has failed to heal properly (nonunion). This indicates a complication in the healing process of the initial injury.

Use this code when a patient presents for ongoing management or evaluation of a previously diagnosed displaced fracture of the upper humerus that has not united. This typically occurs after initial treatment attempts have failed to achieve bone healing. It is appropriate for subsequent encounters where nonunion is the primary focus of the visit.

• Ensure documentation clearly specifies "nonunion" as the reason for the subsequent encounter.
• Verify laterality (left/right) if known; "unspecified" should only be used when laterality is not documented.
• Always sequence this code after the appropriate external cause code, if applicable, for the original injury.