Question: According to the medical documentation, the patient has drug-induced chronic gout of the left ankle and foot. Which ICD-10-CM code should I report for this condition? Florida Subscriber Answer: To answer this question, you actually need one more piece of information — whether there was tophus (tophi) present=. You must double-check the medical documentation for this detail. To document drug-induced chronic gout in the patient’s left ankle and foot with tophi, you should report M1A.2721 (Drug-induced chronic gout, left ankle and foot, with tophus (tophi)). On the other hand, to report drug-induced chronic gout of the left ankle and foot without tophi, you should report M1A.2720 (Drug-induced chronic gout, left ankle and foot, without tophus (tophi)).