ICD-10-CM > M00-M99 > M05-M14 > M1A > M1A.2 > M1A.26 M1A.26 Drug-induced chronic gout, knee Non-Billable/Non-Specific Codes M1A.261Drug-induced chronic gout, right kneeM1A.2610..., without tophus (tophi)M1A.2611..., with tophus (tophi)M1A.262Drug-induced chronic gout, left kneeM1A.2620..., without tophus (tophi)M1A.2621..., with tophus (tophi)M1A.269Drug-induced chronic gout, unspecified kneeM1A.2690..., without tophus (tophi)M1A.2691..., with tophus (tophi)