Osteonecrosis due to drugs of right radius

This code signifies the death of bone tissue in the right radius specifically caused by the use of certain medications. This condition can lead to pain, functional impairment, and potential bone collapse in the affected area. It is a serious adverse effect of drug therapy.

Apply this code when documentation clearly states osteonecrosis of the right radius and explicitly links its etiology to drug use. Common scenarios include patients on long-term corticosteroid therapy or bisphosphonates presenting with bone pain and imaging consistent with avascular necrosis in the right forearm. Supporting documentation should include physician notes detailing the diagnosis, drug history, and imaging findings.

• Always confirm the laterality (right vs. left) and the specific bone affected (radius).
• Ensure the physician explicitly states a drug-induced etiology; do not assume.
• Code any associated pathological fractures separately if present.