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

This code signifies a chronic inflammatory arthritis affecting the right hand, specifically caused by lead exposure. It is characterized by the presence of tophi, which are deposits of monosodium urate crystals, indicating advanced disease. The condition results from impaired uric acid excretion due to lead toxicity.

Apply this code when documentation clearly indicates chronic gout in the patient's right hand, with a confirmed etiology of lead poisoning. The presence of tophi must be explicitly stated or evident from clinical findings (e.g., physical exam, imaging). This code is appropriate for patients with a history of lead exposure and clinical manifestations consistent with chronic gout.

• Ensure documentation specifies "chronic" gout and explicitly links it to lead exposure.
• Verify the laterality (right hand) and the presence of tophi are clearly documented.
• Always code an additional diagnosis for the lead poisoning (e.g., T56.0X1- for lead and its compounds, accidental poisoning).