Osteonecrosis in diseases classd elswhr, right upper arm

This code signifies the death of bone tissue in the right upper arm due to a loss of blood supply, occurring as a manifestation or complication of another underlying disease. It represents avascular necrosis of the humerus when the primary etiology is a systemic condition rather than a local injury or idiopathic cause.

Apply this code when documentation clearly indicates osteonecrosis of the right humerus and explicitly links it to an underlying systemic disease, such as lupus, sickle cell anemia, or long-term corticosteroid use. The medical record should specify the affected arm and the causal relationship to the primary disease.

• Always sequence the underlying systemic disease first, followed by this code.
• Ensure documentation specifies "right upper arm" or "right humerus" to support laterality.
• Distinguish from idiopathic osteonecrosis (M87.-) or osteonecrosis due to trauma.