ICD-10-CM > M00-M99 > M05-M14 > M1A > M1A.0 > M1A.04 M1A.04 Idiopathic chronic gout, hand Non-Billable/Non-Specific Codes M1A.041Idiopathic chronic gout, right handM1A.0410..., without tophus (tophi)M1A.0411..., with tophus (tophi)M1A.042Idiopathic chronic gout, left handM1A.0420..., without tophus (tophi)M1A.0421..., with tophus (tophi)M1A.049Idiopathic chronic gout, unspecified handM1A.0490..., without tophus (tophi)M1A.0491..., with tophus (tophi)