Drug-induced chronic gout, right ankle and foot, with tophus

This code signifies chronic gout in the right ankle and foot that has been induced by medication, and is characterized by the presence of tophi. Tophi are deposits of uric acid crystals that form under the skin or in joints, indicating long-standing, uncontrolled hyperuricemia.

Use this code when documentation explicitly states drug-induced chronic gout affecting the right ankle and foot, and confirms the presence of tophaceous deposits. This typically applies to patients with a history of medication-related hyperuricemia leading to chronic gouty arthritis with visible or palpable tophi in the specified anatomical location.

• Always confirm the laterality (right) and the specific anatomical site (ankle and foot).
• Ensure documentation clearly links the gout to drug induction and notes the presence of tophi.
• Do not use this code for acute gout or chronic gout without tophi, or if the gout is not drug-induced.