Unsp disp fx of surg neck of l humer, subs for fx w nonunion

This code signifies a fracture of the surgical neck of the left humerus where the bone fragments are not in their normal anatomical alignment, and the fracture has failed to heal properly after an initial treatment. The "unspecified" nature means the specific type of fracture (e.g., comminuted, transverse) is not documented. This code is used when the patient is receiving ongoing care for this non-healing fracture.

Use this code for a patient presenting for follow-up care, evaluation, or treatment (e.g., cast changes, physical therapy, surgical planning for revision) of a previously diagnosed and treated displaced surgical neck fracture of the left humerus that has not united. This applies when the physician has documented nonunion of the fracture.

• Ensure documentation clearly states "nonunion" and specifies the "left humerus" and "surgical neck."
• Verify that the encounter is a "subsequent encounter" for the fracture, not the initial treatment.
• Pair with an external cause code if the cause of the fracture is known and relevant to the current encounter.