| M1A.00 | Idiopathic chronic gout, unspecified site | NON-BILLABLE CODE |
| M1A.00X0 | Idiopathic chronic gout, unspecified site, without tophus (tophi) | BILLABLE CODE |
| M1A.00X1 | Idiopathic chronic gout, unspecified site, with tophus (tophi) | BILLABLE CODE |
| M1A.01 | Idiopathic chronic gout, shoulder | NON-BILLABLE CODE |
| M1A.011 | Idiopathic chronic gout, right shoulder | NON-BILLABLE CODE |
| M1A.0110 | Idiopathic chronic gout, right shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.0111 | Idiopathic chronic gout, right shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.012 | Idiopathic chronic gout, left shoulder | NON-BILLABLE CODE |
| M1A.0120 | Idiopathic chronic gout, left shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.0121 | Idiopathic chronic gout, left shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.019 | Idiopathic chronic gout, unspecified shoulder | NON-BILLABLE CODE |
| M1A.0190 | Idiopathic chronic gout, unspecified shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.0191 | Idiopathic chronic gout, unspecified shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.02 | Idiopathic chronic gout, elbow | NON-BILLABLE CODE |
| M1A.021 | Idiopathic chronic gout, right elbow | NON-BILLABLE CODE |
| M1A.0210 | Idiopathic chronic gout, right elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.0211 | Idiopathic chronic gout, right elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.022 | Idiopathic chronic gout, left elbow | NON-BILLABLE CODE |
| M1A.0220 | Idiopathic chronic gout, left elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.0221 | Idiopathic chronic gout, left elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.029 | Idiopathic chronic gout, unspecified elbow | NON-BILLABLE CODE |
| M1A.0290 | Idiopathic chronic gout, unspecified elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.0291 | Idiopathic chronic gout, unspecified elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.03 | Idiopathic chronic gout, wrist | NON-BILLABLE CODE |
| M1A.031 | Idiopathic chronic gout, right wrist | NON-BILLABLE CODE |
| M1A.0310 | Idiopathic chronic gout, right wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.0311 | Idiopathic chronic gout, right wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.032 | Idiopathic chronic gout, left wrist | NON-BILLABLE CODE |
| M1A.0320 | Idiopathic chronic gout, left wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.0321 | Idiopathic chronic gout, left wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.039 | Idiopathic chronic gout, unspecified wrist | NON-BILLABLE CODE |
| M1A.0390 | Idiopathic chronic gout, unspecified wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.0391 | Idiopathic chronic gout, unspecified wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.04 | Idiopathic chronic gout, hand | NON-BILLABLE CODE |
| M1A.041 | Idiopathic chronic gout, right hand | NON-BILLABLE CODE |
| M1A.0410 | Idiopathic chronic gout, right hand, without tophus (tophi) | BILLABLE CODE |
| M1A.0411 | Idiopathic chronic gout, right hand, with tophus (tophi) | BILLABLE CODE |
| M1A.042 | Idiopathic chronic gout, left hand | NON-BILLABLE CODE |
| M1A.0420 | Idiopathic chronic gout, left hand, without tophus (tophi) | BILLABLE CODE |
| M1A.0421 | Idiopathic chronic gout, left hand, with tophus (tophi) | BILLABLE CODE |
| M1A.049 | Idiopathic chronic gout, unspecified hand | NON-BILLABLE CODE |
| M1A.0490 | Idiopathic chronic gout, unspecified hand, without tophus (tophi) | BILLABLE CODE |
| M1A.0491 | Idiopathic chronic gout, unspecified hand, with tophus (tophi) | BILLABLE CODE |
| M1A.05 | Idiopathic chronic gout, hip | NON-BILLABLE CODE |
| M1A.051 | Idiopathic chronic gout, right hip | NON-BILLABLE CODE |
| M1A.0510 | Idiopathic chronic gout, right hip, without tophus (tophi) | BILLABLE CODE |
| M1A.0511 | Idiopathic chronic gout, right hip, with tophus (tophi) | BILLABLE CODE |
| M1A.052 | Idiopathic chronic gout, left hip | NON-BILLABLE CODE |
| M1A.0520 | Idiopathic chronic gout, left hip, without tophus (tophi) | BILLABLE CODE |
| M1A.0521 | Idiopathic chronic gout, left hip, with tophus (tophi) | BILLABLE CODE |
| M1A.059 | Idiopathic chronic gout, unspecified hip | NON-BILLABLE CODE |
| M1A.0590 | Idiopathic chronic gout, unspecified hip, without tophus (tophi) | BILLABLE CODE |
| M1A.0591 | Idiopathic chronic gout, unspecified hip, with tophus (tophi) | BILLABLE CODE |
| M1A.06 | Idiopathic chronic gout, knee | NON-BILLABLE CODE |
| M1A.061 | Idiopathic chronic gout, right knee | NON-BILLABLE CODE |
| M1A.0610 | Idiopathic chronic gout, right knee, without tophus (tophi) | BILLABLE CODE |
| M1A.0611 | Idiopathic chronic gout, right knee, with tophus (tophi) | BILLABLE CODE |
| M1A.062 | Idiopathic chronic gout, left knee | NON-BILLABLE CODE |
| M1A.0620 | Idiopathic chronic gout, left knee, without tophus (tophi) | BILLABLE CODE |
| M1A.0621 | Idiopathic chronic gout, left knee, with tophus (tophi) | BILLABLE CODE |
| M1A.069 | Idiopathic chronic gout, unspecified knee | NON-BILLABLE CODE |
| M1A.0690 | Idiopathic chronic gout, unspecified knee, without tophus (tophi) | BILLABLE CODE |
| M1A.0691 | Idiopathic chronic gout, unspecified knee, with tophus (tophi) | BILLABLE CODE |
| M1A.07 | Idiopathic chronic gout, ankle and foot | NON-BILLABLE CODE |
| M1A.071 | Idiopathic chronic gout, right ankle and foot | NON-BILLABLE CODE |
| M1A.0710 | Idiopathic chronic gout, right ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.0711 | Idiopathic chronic gout, right ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.072 | Idiopathic chronic gout, left ankle and foot | NON-BILLABLE CODE |
| M1A.0720 | Idiopathic chronic gout, left ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.0721 | Idiopathic chronic gout, left ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.079 | Idiopathic chronic gout, unspecified ankle and foot | NON-BILLABLE CODE |
| M1A.0790 | Idiopathic chronic gout, unspecified ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.0791 | Idiopathic chronic gout, unspecified ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.08 | Idiopathic chronic gout, vertebrae | NON-BILLABLE CODE |
| M1A.08X0 | Idiopathic chronic gout, vertebrae, without tophus (tophi) | BILLABLE CODE |
| M1A.08X1 | Idiopathic chronic gout, vertebrae, with tophus (tophi) | BILLABLE CODE |
| M1A.09 | Idiopathic chronic gout, multiple sites | NON-BILLABLE CODE |
| M1A.09X0 | Idiopathic chronic gout, multiple sites, without tophus (tophi) | BILLABLE CODE |
| M1A.09X1 | Idiopathic chronic gout, multiple sites, with tophus (tophi) | BILLABLE CODE |
