Osteonecrosis due to drugs of right carpus

This diagnosis code signifies the death of bone tissue in the right wrist, specifically the carpal bones, caused by the use of certain medications. This condition can lead to pain, joint collapse, and functional impairment of the wrist.

Apply this code when documentation clearly states osteonecrosis of the right carpus and explicitly links its etiology to drug use (e.g., corticosteroids, bisphosphonates). Supporting clinical notes should detail the affected anatomical site and the drug implicated.

• Ensure documentation specifies "right carpus" and not a general wrist or hand osteonecrosis.
• Confirm the drug-induced etiology; do not use for osteonecrosis due to trauma, radiation, or other causes.
• Consider an additional code for the specific drug causing the osteonecrosis, if known and clinically relevant.