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

This code signifies a chronic inflammatory arthritis affecting the left hand, specifically caused by lead exposure. It is characterized by the presence of tophi, which are deposits of uric acid crystals in the soft tissues around the joints. The chronic nature indicates persistent or recurrent symptoms.

Use this code when documentation clearly states a diagnosis of chronic gout in the left hand, explicitly linked to lead poisoning. The presence of tophi must also be documented. This code is appropriate for patients presenting with long-standing joint pain, swelling, and visible or palpable tophi in the left hand, with a confirmed history of lead exposure.

• Ensure documentation specifies "chronic" gout and a causal link to "lead" exposure.
• Verify the affected laterality is "left hand" and that "tophi" are present.
• Code an additional diagnosis for the lead poisoning (e.g., T56.0X1- for lead and its compounds) to fully capture the etiology.