ICD-10-CM > M00-M99 > M05-M14 > M1A > M1A.4 > M1A.47 > M1A.472 M1A.472 Other secondary chronic gout, left ankle and foot Non-Billable/Non-Specific Codes M1A.4720..., without tophus (tophi)M1A.4721..., with tophus (tophi)