ICD-10-CM > M00-M99 > M05-M14 > M1A > M1A.1 > M1A.18 M1A.18 Lead-induced chronic gout, vertebrae Non-Billable/Non-Specific Codes M1A.18X0..., without tophus (tophi)M1A.18X1..., with tophus (tophi)