4-part fx surgical neck of r humerus, subs for fx w malunion

This code signifies a complex fracture involving four distinct fragments of the surgical neck of the right humerus, which is the narrow area just below the humeral head. "Malunion" indicates that the bone has healed, but in an incorrect or deformed position, potentially leading to functional impairment. This is a subsequent encounter, meaning the patient is being seen for ongoing care related to this previously sustained and now malunited fracture.

Use this code when documenting follow-up care for a patient who previously sustained a 4-part fracture of the surgical neck of the right humerus, and imaging or clinical assessment confirms that the fracture has healed in an unsatisfactory alignment. This would apply to visits for evaluating the malunion, planning corrective surgery, or managing symptoms related to the deformity.

• Ensure documentation clearly specifies "malunion" and not "nonunion" or "delayed healing," as these have different codes.
• Verify that the fracture is explicitly described as a "4-part" fracture of the surgical neck to match the specificity of the code.
• Confirm the laterality (right humerus) and that this is a subsequent encounter for ongoing management of the healed but malunited fracture.