Drug-induced chronic gout, right hand, with tophus (tophi)

This code signifies chronic gout that has been induced by medication, specifically affecting the right hand and characterized by the presence of tophi. Tophi are deposits of uric acid crystals that form under the skin or in joints, indicating advanced or poorly controlled gout.

Apply this code when documentation clearly states drug-induced chronic gout with tophi, localized to the patient's right hand. This typically occurs in patients with a history of medication use (e.g., diuretics, aspirin) contributing to hyperuricemia and subsequent chronic gouty arthritis.

• Ensure documentation specifies "drug-induced" and not just chronic gout.
• Verify the affected laterality (right hand) and the presence of tophi.
• Consider an additional code for the specific drug causing the adverse effect, if known and documented.