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

This code signifies a chronic inflammatory arthritis affecting the right hip joint, specifically caused by lead exposure. The presence of tophi, which are deposits of uric acid crystals, indicates a more advanced and severe form of the gout.

Use this code when documentation clearly states chronic gout of the right hip, explicitly linked to lead toxicity, and confirms the presence of tophaceous deposits. This diagnosis typically arises from a patient's history of lead exposure, elevated lead levels, and characteristic clinical and imaging findings of gout with tophi in the specified joint.

• Ensure documentation specifies "chronic" gout and explicitly links it to "lead-induced" etiology.
• Verify the affected joint is the "right hip" and that "tophi" are present.
• Always code the underlying lead poisoning (e.g., T56.0X1- for lead and its compounds) as a primary or secondary diagnosis, depending on the encounter's focus.