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

This code signifies a chronic inflammatory arthritis of the right hip joint caused by a medication, characterized by the deposition of uric acid crystals (tophi) within or around the joint. The drug-induced nature differentiates it from primary gout.

Apply this code when documentation clearly states chronic gout of the right hip, explicitly linked to a drug, and notes the presence of tophi. This typically occurs in patients on long-term medications known to elevate uric acid levels, such as diuretics or aspirin.

• Ensure documentation specifies "drug-induced" and identifies the specific drug if possible (use an additional code for adverse effect of drug, T36-T50, with a 5th or 6th character indicating adverse effect).
• Verify the laterality (right hip) and the presence of tophi are explicitly documented.
• Distinguish from acute drug-induced gout (M10.2-) or chronic gout without tophi (M1A.0-).