Drug-induced gout, left knee

This code signifies an inflammatory arthritis of the left knee caused by a medication. It specifically identifies gout that has been triggered or exacerbated by a drug, manifesting with acute pain, swelling, and tenderness in the left knee joint.

Apply this code when documentation clearly states a diagnosis of drug-induced gout affecting the left knee. This typically occurs when a patient develops gout symptoms in the left knee following the initiation or change of a medication known to precipitate gout, such as diuretics or certain immunosuppressants.

• Ensure the documentation explicitly links the gout to a specific drug.
• Do not use this code for primary gout or gout due to other secondary causes.
• Always sequence this code after the code for the adverse effect of the drug (T36-T50 with 5th or 6th character 5) if applicable, or after the code for the drug itself if it's an adverse effect.