ICD-10-CM > M00-M99 > M05-M14 > M1A > M1A.2 > M1A.26 > M1A.269 M1A.269 Drug-induced chronic gout, unspecified knee Non-Billable/Non-Specific Codes M1A.2690..., without tophus (tophi)M1A.2691..., with tophus (tophi)