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

This code signifies a chronic inflammatory arthritis affecting the left hip joint, specifically caused by lead exposure. The presence of tophi, which are deposits of uric acid crystals, further characterizes this advanced stage of gout.

Apply this code when documentation clearly indicates chronic gout in the left hip, explicitly linked to lead toxicity, and notes the presence of tophaceous deposits. This typically occurs in patients with a history of lead exposure and persistent, severe gout symptoms.

• Ensure documentation specifies "chronic" gout and a direct causal link to lead.
• Verify the affected joint is the left hip and that tophi are present.
• Always sequence the underlying cause (lead poisoning) first, if applicable and still active.