ICD-10-CM > M00-M99 > M05-M14 > M1A > M1A.2 > M1A.26 > M1A.261 M1A.261 Drug-induced chronic gout, right knee Non-Billable/Non-Specific Codes M1A.2610..., without tophus (tophi)M1A.2611..., with tophus (tophi)