| M1A.361 | Chronic gout due to renal impairment, right knee | NON-BILLABLE CODE |
| M1A.3610 | Chronic gout due to renal impairment, right knee, without tophus (tophi) | BILLABLE CODE |
| M1A.3611 | Chronic gout due to renal impairment, right knee, with tophus (tophi) | BILLABLE CODE |
| M1A.362 | Chronic gout due to renal impairment, left knee | NON-BILLABLE CODE |
| M1A.3620 | Chronic gout due to renal impairment, left knee, without tophus (tophi) | BILLABLE CODE |
| M1A.3621 | Chronic gout due to renal impairment, left knee, with tophus (tophi) | BILLABLE CODE |
| M1A.369 | Chronic gout due to renal impairment, unspecified knee | NON-BILLABLE CODE |
| M1A.3690 | Chronic gout due to renal impairment, unspecified knee, without tophus (tophi) | BILLABLE CODE |
| M1A.3691 | Chronic gout due to renal impairment, unspecified knee, with tophus (tophi) | BILLABLE CODE |
