Other secondary osteonecrosis of right radius

This code signifies the death of bone tissue in the right radius due to an underlying condition other than trauma, infection, or primary osteonecrosis. This avascular necrosis results from impaired blood supply to the bone, leading to cellular death and potential bone collapse.

Apply this code when documentation specifies osteonecrosis of the right radius and attributes it to a secondary cause such as corticosteroid use, alcoholism, sickle cell disease, or systemic lupus erythematosus. The medical record must clearly indicate the right side and the non-primary etiology.

• Ensure documentation explicitly states "right radius" to avoid laterality errors.
• Always code the underlying secondary condition first, followed by this code for the osteonecrosis.
• Distinguish from primary osteonecrosis (M87.0-) and post-traumatic osteonecrosis (M87.1-).