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

This code signifies chronic gout specifically induced by medication, affecting the right wrist, and characterized by the presence of tophaceous deposits. Tophaceous gout involves the accumulation of urate crystals in soft tissues, leading to visible nodules.

Apply this code when documentation clearly indicates drug-induced chronic gout impacting the right wrist, with a confirmed presence of tophi. This diagnosis typically follows a history of medication use known to precipitate gout, such as diuretics or certain immunosuppressants, alongside clinical and imaging evidence of tophi.

• Ensure documentation explicitly states "drug-induced" and specifies the right wrist as the affected joint.
• Verify the presence of "tophus" or "tophi" in the medical record; otherwise, a non-tophaceous code would be more appropriate.
• Consider an additional code for the specific drug causing the adverse effect, if known and documented, using an external cause code (e.g., T36-T50 series).