3-part fx surg neck of unsp humerus, subs for fx w nonunion

This code signifies a complex fracture involving three distinct breaks in the surgical neck region of the humerus, where the specific side (left or right) is not documented. The "nonunion" aspect indicates that the bone fragments have failed to heal together after an initial treatment, requiring ongoing medical attention.

Apply this code for follow-up encounters when a patient is being treated for a previously diagnosed 3-part surgical neck humerus fracture that has not united. This includes situations where further interventions, such as revision surgery or specialized non-surgical treatments for nonunion, are being planned or performed.

• Ensure documentation clearly states "nonunion" for a 3-part surgical neck fracture.
• This code is for subsequent encounters; an initial encounter would use a different seventh character.
• Do not use if the laterality (left/right) of the humerus is specified in the medical record.