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

This code signifies a complex fracture involving three distinct fragments of the humerus at the surgical neck, where the bone has healed in an anatomically incorrect or misaligned position. It indicates that the patient is currently receiving care for this previously sustained fracture, and the primary concern is the suboptimal healing outcome.

Apply this code when a patient presents for follow-up care, evaluation, or treatment related to a 3-part surgical neck humerus fracture that has healed with malunion. This includes scenarios such as physical therapy for functional deficits due to malunion, assessment for corrective surgery, or management of pain stemming from the malaligned healing.

• Ensure documentation clearly specifies "3-part" and "surgical neck" to differentiate from other humerus fracture types.
• Verify that the encounter is for a subsequent visit and explicitly addresses the malunion of the fracture.
• Do not use this code for initial treatment of the fracture or for nonunion (failure to heal).