ICD-10-CM > M00-M99 > M05-M14 > M1A > M1A.0 > M1A.09 M1A.09 Idiopathic chronic gout, multiple sites Non-Billable/Non-Specific Codes M1A.09X0..., without tophus (tophi)M1A.09X1..., with tophus (tophi)