| M1A | Chronic gout | NON-BILLABLE CODE |
| M1A.0 | Idiopathic chronic gout | NON-BILLABLE CODE |
| 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 |
| M1A.1 | Lead-induced chronic gout | NON-BILLABLE CODE |
| M1A.10 | Lead-induced chronic gout, unspecified site | NON-BILLABLE CODE |
| M1A.10X0 | Lead-induced chronic gout, unspecified site, without tophus (tophi) | BILLABLE CODE |
| M1A.10X1 | Lead-induced chronic gout, unspecified site, with tophus (tophi) | BILLABLE CODE |
| M1A.11 | Lead-induced chronic gout, shoulder | NON-BILLABLE CODE |
| M1A.111 | Lead-induced chronic gout, right shoulder | NON-BILLABLE CODE |
| M1A.1110 | Lead-induced chronic gout, right shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.1111 | Lead-induced chronic gout, right shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.112 | Lead-induced chronic gout, left shoulder | NON-BILLABLE CODE |
| M1A.1120 | Lead-induced chronic gout, left shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.1121 | Lead-induced chronic gout, left shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.119 | Lead-induced chronic gout, unspecified shoulder | NON-BILLABLE CODE |
| M1A.1190 | Lead-induced chronic gout, unspecified shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.1191 | Lead-induced chronic gout, unspecified shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.12 | Lead-induced chronic gout, elbow | NON-BILLABLE CODE |
| M1A.121 | Lead-induced chronic gout, right elbow | NON-BILLABLE CODE |
| M1A.1210 | Lead-induced chronic gout, right elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.1211 | Lead-induced chronic gout, right elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.122 | Lead-induced chronic gout, left elbow | NON-BILLABLE CODE |
| M1A.1220 | Lead-induced chronic gout, left elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.1221 | Lead-induced chronic gout, left elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.129 | Lead-induced chronic gout, unspecified elbow | NON-BILLABLE CODE |
| M1A.1290 | Lead-induced chronic gout, unspecified elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.1291 | Lead-induced chronic gout, unspecified elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.13 | Lead-induced chronic gout, wrist | NON-BILLABLE CODE |
| M1A.131 | Lead-induced chronic gout, right wrist | NON-BILLABLE CODE |
| M1A.1310 | Lead-induced chronic gout, right wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.1311 | Lead-induced chronic gout, right wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.132 | Lead-induced chronic gout, left wrist | NON-BILLABLE CODE |
| M1A.1320 | Lead-induced chronic gout, left wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.1321 | Lead-induced chronic gout, left wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.139 | Lead-induced chronic gout, unspecified wrist | NON-BILLABLE CODE |
| M1A.1390 | Lead-induced chronic gout, unspecified wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.1391 | Lead-induced chronic gout, unspecified wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.14 | Lead-induced chronic gout, hand | NON-BILLABLE CODE |
| M1A.141 | Lead-induced chronic gout, right hand | NON-BILLABLE CODE |
| M1A.1410 | Lead-induced chronic gout, right hand, without tophus (tophi) | BILLABLE CODE |
| M1A.1411 | Lead-induced chronic gout, right hand, with tophus (tophi) | BILLABLE CODE |
| M1A.142 | Lead-induced chronic gout, left hand | NON-BILLABLE CODE |
| M1A.1420 | Lead-induced chronic gout, left hand, without tophus (tophi) | BILLABLE CODE |
| M1A.1421 | Lead-induced chronic gout, left hand, with tophus (tophi) | BILLABLE CODE |
| M1A.149 | Lead-induced chronic gout, unspecified hand | NON-BILLABLE CODE |
| M1A.1490 | Lead-induced chronic gout, unspecified hand, without tophus (tophi) | BILLABLE CODE |
| M1A.1491 | Lead-induced chronic gout, unspecified hand, with tophus (tophi) | BILLABLE CODE |
| M1A.15 | Lead-induced chronic gout, hip | NON-BILLABLE CODE |
| M1A.151 | Lead-induced chronic gout, right hip | NON-BILLABLE CODE |
| M1A.1510 | Lead-induced chronic gout, right hip, without tophus (tophi) | BILLABLE CODE |
| M1A.1511 | Lead-induced chronic gout, right hip, with tophus (tophi) | BILLABLE CODE |
| M1A.152 | Lead-induced chronic gout, left hip | NON-BILLABLE CODE |
| M1A.1520 | Lead-induced chronic gout, left hip, without tophus (tophi) | BILLABLE CODE |
| M1A.1521 | Lead-induced chronic gout, left hip, with tophus (tophi) | BILLABLE CODE |
| M1A.159 | Lead-induced chronic gout, unspecified hip | NON-BILLABLE CODE |
| M1A.1590 | Lead-induced chronic gout, unspecified hip, without tophus (tophi) | BILLABLE CODE |
| M1A.1591 | Lead-induced chronic gout, unspecified hip, with tophus (tophi) | BILLABLE CODE |
| M1A.16 | Lead-induced chronic gout, knee | NON-BILLABLE CODE |
| M1A.161 | Lead-induced chronic gout, right knee | NON-BILLABLE CODE |
| M1A.1610 | Lead-induced chronic gout, right knee, without tophus (tophi) | BILLABLE CODE |
| M1A.1611 | Lead-induced chronic gout, right knee, with tophus (tophi) | BILLABLE CODE |
| M1A.162 | Lead-induced chronic gout, left knee | NON-BILLABLE CODE |
| M1A.1620 | Lead-induced chronic gout, left knee, without tophus (tophi) | BILLABLE CODE |
| M1A.1621 | Lead-induced chronic gout, left knee, with tophus (tophi) | BILLABLE CODE |
| M1A.169 | Lead-induced chronic gout, unspecified knee | NON-BILLABLE CODE |
| M1A.1690 | Lead-induced chronic gout, unspecified knee, without tophus (tophi) | BILLABLE CODE |
| M1A.17 | Lead-induced chronic gout, ankle and foot | NON-BILLABLE CODE |
| M1A.171 | Lead-induced chronic gout, right ankle and foot | NON-BILLABLE CODE |
| M1A.1710 | Lead-induced chronic gout, right ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.1711 | Lead-induced chronic gout, right ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.172 | Lead-induced chronic gout, left ankle and foot | NON-BILLABLE CODE |
| M1A.1720 | Lead-induced chronic gout, left ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.1721 | Lead-induced chronic gout, left ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.179 | Lead-induced chronic gout, unspecified ankle and foot | NON-BILLABLE CODE |
| M1A.1790 | Lead-induced chronic gout, unspecified ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.1791 | Lead-induced chronic gout, unspecified ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.18 | Lead-induced chronic gout, vertebrae | NON-BILLABLE CODE |
| M1A.18X0 | Lead-induced chronic gout, vertebrae, without tophus (tophi) | BILLABLE CODE |
| M1A.18X1 | Lead-induced chronic gout, vertebrae, with tophus (tophi) | BILLABLE CODE |
| M1A.19 | Lead-induced chronic gout, multiple sites | NON-BILLABLE CODE |
| M1A.19X0 | Lead-induced chronic gout, multiple sites, without tophus (tophi) | BILLABLE CODE |
| M1A.19X1 | Lead-induced chronic gout, multiple sites, with tophus (tophi) | BILLABLE CODE |
| M1A.2 | Drug-induced chronic gout | NON-BILLABLE CODE |
| M1A.20 | Drug-induced chronic gout, unspecified site | NON-BILLABLE CODE |
| M1A.20X0 | Drug-induced chronic gout, unspecified site, without tophus (tophi) | BILLABLE CODE |
| M1A.20X1 | Drug-induced chronic gout, unspecified site, with tophus (tophi) | BILLABLE CODE |
| M1A.21 | Drug-induced chronic gout, shoulder | NON-BILLABLE CODE |
| M1A.211 | Drug-induced chronic gout, right shoulder | NON-BILLABLE CODE |
| M1A.2110 | Drug-induced chronic gout, right shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.2111 | Drug-induced chronic gout, right shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.212 | Drug-induced chronic gout, left shoulder | NON-BILLABLE CODE |
| M1A.2120 | Drug-induced chronic gout, left shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.2121 | Drug-induced chronic gout, left shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.219 | Drug-induced chronic gout, unspecified shoulder | NON-BILLABLE CODE |
| M1A.2190 | Drug-induced chronic gout, unspecified shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.2191 | Drug-induced chronic gout, unspecified shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.22 | Drug-induced chronic gout, elbow | NON-BILLABLE CODE |
| M1A.221 | Drug-induced chronic gout, right elbow | NON-BILLABLE CODE |
| M1A.2210 | Drug-induced chronic gout, right elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.2211 | Drug-induced chronic gout, right elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.222 | Drug-induced chronic gout, left elbow | NON-BILLABLE CODE |
| M1A.2220 | Drug-induced chronic gout, left elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.2221 | Drug-induced chronic gout, left elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.229 | Drug-induced chronic gout, unspecified elbow | NON-BILLABLE CODE |
| M1A.2290 | Drug-induced chronic gout, unspecified elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.2291 | Drug-induced chronic gout, unspecified elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.23 | Drug-induced chronic gout, wrist | NON-BILLABLE CODE |
| M1A.231 | Drug-induced chronic gout, right wrist | NON-BILLABLE CODE |
| M1A.2310 | Drug-induced chronic gout, right wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.2311 | Drug-induced chronic gout, right wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.232 | Drug-induced chronic gout, left wrist | NON-BILLABLE CODE |
| M1A.2320 | Drug-induced chronic gout, left wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.2321 | Drug-induced chronic gout, left wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.239 | Drug-induced chronic gout, unspecified wrist | NON-BILLABLE CODE |
| M1A.2390 | Drug-induced chronic gout, unspecified wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.2391 | Drug-induced chronic gout, unspecified wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.24 | Drug-induced chronic gout, hand | NON-BILLABLE CODE |
| M1A.241 | Drug-induced chronic gout, right hand | NON-BILLABLE CODE |
| M1A.2410 | Drug-induced chronic gout, right hand, without tophus (tophi) | BILLABLE CODE |
| M1A.2411 | Drug-induced chronic gout, right hand, with tophus (tophi) | BILLABLE CODE |
| M1A.242 | Drug-induced chronic gout, left hand | NON-BILLABLE CODE |
| M1A.2420 | Drug-induced chronic gout, left hand, without tophus (tophi) | BILLABLE CODE |
| M1A.2421 | Drug-induced chronic gout, left hand, with tophus (tophi) | BILLABLE CODE |
| M1A.249 | Drug-induced chronic gout, unspecified hand | NON-BILLABLE CODE |
| M1A.2490 | Drug-induced chronic gout, unspecified hand, without tophus (tophi) | BILLABLE CODE |
| M1A.2491 | Drug-induced chronic gout, unspecified hand, with tophus (tophi) | BILLABLE CODE |
| M1A.25 | Drug-induced chronic gout, hip | NON-BILLABLE CODE |
| M1A.251 | Drug-induced chronic gout, right hip | NON-BILLABLE CODE |
| M1A.2510 | Drug-induced chronic gout, right hip, without tophus (tophi) | BILLABLE CODE |
| M1A.2511 | Drug-induced chronic gout, right hip, with tophus (tophi) | BILLABLE CODE |
| M1A.252 | Drug-induced chronic gout, left hip | NON-BILLABLE CODE |
| M1A.2520 | Drug-induced chronic gout, left hip, without tophus (tophi) | BILLABLE CODE |
| M1A.2521 | Drug-induced chronic gout, left hip, with tophus (tophi) | BILLABLE CODE |
| M1A.259 | Drug-induced chronic gout, unspecified hip | NON-BILLABLE CODE |
| M1A.2590 | Drug-induced chronic gout, unspecified hip, without tophus (tophi) | BILLABLE CODE |
| M1A.2591 | Drug-induced chronic gout, unspecified hip, with tophus (tophi) | BILLABLE CODE |
| M1A.26 | Drug-induced chronic gout, knee | NON-BILLABLE CODE |
| M1A.261 | Drug-induced chronic gout, right knee | NON-BILLABLE CODE |
| M1A.2610 | Drug-induced chronic gout, right knee, without tophus (tophi) | BILLABLE CODE |
| M1A.2611 | Drug-induced chronic gout, right knee, with tophus (tophi) | BILLABLE CODE |
| M1A.262 | Drug-induced chronic gout, left knee | NON-BILLABLE CODE |
| M1A.2620 | Drug-induced chronic gout, left knee, without tophus (tophi) | BILLABLE CODE |
| M1A.2621 | Drug-induced chronic gout, left knee, with tophus (tophi) | BILLABLE CODE |
| M1A.269 | Drug-induced chronic gout, unspecified knee | NON-BILLABLE CODE |
| M1A.2690 | Drug-induced chronic gout, unspecified knee, without tophus (tophi) | BILLABLE CODE |
| M1A.2691 | Drug-induced chronic gout, unspecified knee, with tophus (tophi) | BILLABLE CODE |
| M1A.27 | Drug-induced chronic gout, ankle and foot | NON-BILLABLE CODE |
| M1A.271 | Drug-induced chronic gout, right ankle and foot | NON-BILLABLE CODE |
| M1A.2710 | Drug-induced chronic gout, right ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.2711 | Drug-induced chronic gout, right ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.272 | Drug-induced chronic gout, left ankle and foot | NON-BILLABLE CODE |
| M1A.2720 | Drug-induced chronic gout, left ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.2721 | Drug-induced chronic gout, left ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.279 | Drug-induced chronic gout, unspecified ankle and foot | NON-BILLABLE CODE |
| M1A.2790 | Drug-induced chronic gout, unspecified ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.2791 | Drug-induced chronic gout, unspecified ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.28 | Drug-induced chronic gout, vertebrae | NON-BILLABLE CODE |
| M1A.28X0 | Drug-induced chronic gout, vertebrae, without tophus (tophi) | BILLABLE CODE |
| M1A.28X1 | Drug-induced chronic gout, vertebrae, with tophus (tophi) | BILLABLE CODE |
| M1A.29 | Drug-induced chronic gout, multiple sites | NON-BILLABLE CODE |
| M1A.29X0 | Drug-induced chronic gout, multiple sites, without tophus (tophi) | BILLABLE CODE |
| M1A.29X1 | Drug-induced chronic gout, multiple sites, with tophus (tophi) | BILLABLE CODE |
| M1A.3 | Chronic gout due to renal impairment | NON-BILLABLE CODE |
| M1A.30 | Chronic gout due to renal impairment, unspecified site | NON-BILLABLE CODE |
| M1A.30X0 | Chronic gout due to renal impairment, unspecified site, without tophus (tophi) | BILLABLE CODE |
| M1A.30X1 | Chronic gout due to renal impairment, unspecified site, with tophus (tophi) | BILLABLE CODE |
| M1A.31 | Chronic gout due to renal impairment, shoulder | NON-BILLABLE CODE |
| M1A.311 | Chronic gout due to renal impairment, right shoulder | NON-BILLABLE CODE |
| M1A.3110 | Chronic gout due to renal impairment, right shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.3111 | Chronic gout due to renal impairment, right shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.312 | Chronic gout due to renal impairment, left shoulder | NON-BILLABLE CODE |
| M1A.3120 | Chronic gout due to renal impairment, left shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.3121 | Chronic gout due to renal impairment, left shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.319 | Chronic gout due to renal impairment, unspecified shoulder | NON-BILLABLE CODE |
| M1A.3190 | Chronic gout due to renal impairment, unspecified shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.3191 | Chronic gout due to renal impairment, unspecified shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.32 | Chronic gout due to renal impairment, elbow | NON-BILLABLE CODE |
| M1A.321 | Chronic gout due to renal impairment, right elbow | NON-BILLABLE CODE |
| M1A.3210 | Chronic gout due to renal impairment, right elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.3211 | Chronic gout due to renal impairment, right elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.322 | Chronic gout due to renal impairment, left elbow | NON-BILLABLE CODE |
| M1A.3220 | Chronic gout due to renal impairment, left elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.3221 | Chronic gout due to renal impairment, left elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.329 | Chronic gout due to renal impairment, unspecified elbow | NON-BILLABLE CODE |
| M1A.3290 | Chronic gout due to renal impairment, unspecified elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.3291 | Chronic gout due to renal impairment, unspecified elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.33 | Chronic gout due to renal impairment, wrist | NON-BILLABLE CODE |
| M1A.331 | Chronic gout due to renal impairment, right wrist | NON-BILLABLE CODE |
| M1A.3310 | Chronic gout due to renal impairment, right wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.3311 | Chronic gout due to renal impairment, right wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.332 | Chronic gout due to renal impairment, left wrist | NON-BILLABLE CODE |
| M1A.3320 | Chronic gout due to renal impairment, left wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.3321 | Chronic gout due to renal impairment, left wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.339 | Chronic gout due to renal impairment, unspecified wrist | NON-BILLABLE CODE |
| M1A.3390 | Chronic gout due to renal impairment, unspecified wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.3391 | Chronic gout due to renal impairment, unspecified wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.34 | Chronic gout due to renal impairment, hand | NON-BILLABLE CODE |
| M1A.341 | Chronic gout due to renal impairment, right hand | NON-BILLABLE CODE |
| M1A.3410 | Chronic gout due to renal impairment, right hand, without tophus (tophi) | BILLABLE CODE |
| M1A.3411 | Chronic gout due to renal impairment, right hand, with tophus (tophi) | BILLABLE CODE |
| M1A.342 | Chronic gout due to renal impairment, left hand | NON-BILLABLE CODE |
| M1A.3420 | Chronic gout due to renal impairment, left hand, without tophus (tophi) | BILLABLE CODE |
| M1A.3421 | Chronic gout due to renal impairment, left hand, with tophus (tophi) | BILLABLE CODE |
| M1A.349 | Chronic gout due to renal impairment, unspecified hand | NON-BILLABLE CODE |
| M1A.3490 | Chronic gout due to renal impairment, unspecified hand, without tophus (tophi) | BILLABLE CODE |
| M1A.3491 | Chronic gout due to renal impairment, unspecified hand, with tophus (tophi) | BILLABLE CODE |
| M1A.35 | Chronic gout due to renal impairment, hip | NON-BILLABLE CODE |
| M1A.351 | Chronic gout due to renal impairment, right hip | NON-BILLABLE CODE |
| M1A.3510 | Chronic gout due to renal impairment, right hip, without tophus (tophi) | BILLABLE CODE |
| M1A.3511 | Chronic gout due to renal impairment, right hip, with tophus (tophi) | BILLABLE CODE |
| M1A.352 | Chronic gout due to renal impairment, left hip | NON-BILLABLE CODE |
| M1A.3520 | Chronic gout due to renal impairment, left hip, without tophus (tophi) | BILLABLE CODE |
| M1A.3521 | Chronic gout due to renal impairment, left hip, with tophus (tophi) | BILLABLE CODE |
| M1A.359 | Chronic gout due to renal impairment, unspecified hip | NON-BILLABLE CODE |
| M1A.3590 | Chronic gout due to renal impairment, unspecified hip, without tophus (tophi) | BILLABLE CODE |
| M1A.3591 | Chronic gout due to renal impairment, unspecified hip, with tophus (tophi) | BILLABLE CODE |
| M1A.36 | Chronic gout due to renal impairment, knee | NON-BILLABLE CODE |
| 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 |
| M1A.37 | Chronic gout due to renal impairment, ankle and foot | NON-BILLABLE CODE |
| M1A.371 | Chronic gout due to renal impairment, right ankle and foot | NON-BILLABLE CODE |
| M1A.3710 | Chronic gout due to renal impairment, right ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.3711 | Chronic gout due to renal impairment, right ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.372 | Chronic gout due to renal impairment, left ankle and foot | NON-BILLABLE CODE |
| M1A.3720 | Chronic gout due to renal impairment, left ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.3721 | Chronic gout due to renal impairment, left ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.379 | Chronic gout due to renal impairment, unspecified ankle and foot | NON-BILLABLE CODE |
| M1A.3790 | Chronic gout due to renal impairment, unspecified ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.3791 | Chronic gout due to renal impairment, unspecified ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.38 | Chronic gout due to renal impairment, vertebrae | NON-BILLABLE CODE |
| M1A.38X0 | Chronic gout due to renal impairment, vertebrae, without tophus (tophi) | BILLABLE CODE |
| M1A.38X1 | Chronic gout due to renal impairment, vertebrae, with tophus (tophi) | BILLABLE CODE |
| M1A.39 | Chronic gout due to renal impairment, multiple sites | NON-BILLABLE CODE |
| M1A.39X0 | Chronic gout due to renal impairment, multiple sites, without tophus (tophi) | BILLABLE CODE |
| M1A.39X1 | Chronic gout due to renal impairment, multiple sites, with tophus (tophi) | BILLABLE CODE |
| M1A.4 | Other secondary chronic gout | NON-BILLABLE CODE |
| M1A.40 | Other secondary chronic gout, unspecified site | NON-BILLABLE CODE |
| M1A.40X0 | Other secondary chronic gout, unspecified site, without tophus (tophi) | BILLABLE CODE |
| M1A.40X1 | Other secondary chronic gout, unspecified site, with tophus (tophi) | BILLABLE CODE |
| M1A.41 | Other secondary chronic gout, shoulder | NON-BILLABLE CODE |
| M1A.411 | Other secondary chronic gout, right shoulder | NON-BILLABLE CODE |
| M1A.4110 | Other secondary chronic gout, right shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.4111 | Other secondary chronic gout, right shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.412 | Other secondary chronic gout, left shoulder | NON-BILLABLE CODE |
| M1A.4120 | Other secondary chronic gout, left shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.4121 | Other secondary chronic gout, left shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.419 | Other secondary chronic gout, unspecified shoulder | NON-BILLABLE CODE |
| M1A.4190 | Other secondary chronic gout, unspecified shoulder, without tophus (tophi) | BILLABLE CODE |
| M1A.4191 | Other secondary chronic gout, unspecified shoulder, with tophus (tophi) | BILLABLE CODE |
| M1A.42 | Other secondary chronic gout, elbow | NON-BILLABLE CODE |
| M1A.421 | Other secondary chronic gout, right elbow | NON-BILLABLE CODE |
| M1A.4210 | Other secondary chronic gout, right elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.4211 | Other secondary chronic gout, right elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.422 | Other secondary chronic gout, left elbow | NON-BILLABLE CODE |
| M1A.4220 | Other secondary chronic gout, left elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.4221 | Other secondary chronic gout, left elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.429 | Other secondary chronic gout, unspecified elbow | NON-BILLABLE CODE |
| M1A.4290 | Other secondary chronic gout, unspecified elbow, without tophus (tophi) | BILLABLE CODE |
| M1A.4291 | Other secondary chronic gout, unspecified elbow, with tophus (tophi) | BILLABLE CODE |
| M1A.43 | Other secondary chronic gout, wrist | NON-BILLABLE CODE |
| M1A.431 | Other secondary chronic gout, right wrist | NON-BILLABLE CODE |
| M1A.4310 | Other secondary chronic gout, right wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.4311 | Other secondary chronic gout, right wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.432 | Other secondary chronic gout, left wrist | NON-BILLABLE CODE |
| M1A.4320 | Other secondary chronic gout, left wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.4321 | Other secondary chronic gout, left wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.439 | Other secondary chronic gout, unspecified wrist | NON-BILLABLE CODE |
| M1A.4390 | Other secondary chronic gout, unspecified wrist, without tophus (tophi) | BILLABLE CODE |
| M1A.4391 | Other secondary chronic gout, unspecified wrist, with tophus (tophi) | BILLABLE CODE |
| M1A.44 | Other secondary chronic gout, hand | NON-BILLABLE CODE |
| M1A.441 | Other secondary chronic gout, right hand | NON-BILLABLE CODE |
| M1A.4410 | Other secondary chronic gout, right hand, without tophus (tophi) | BILLABLE CODE |
| M1A.4411 | Other secondary chronic gout, right hand, with tophus (tophi) | BILLABLE CODE |
| M1A.442 | Other secondary chronic gout, left hand | NON-BILLABLE CODE |
| M1A.4420 | Other secondary chronic gout, left hand, without tophus (tophi) | BILLABLE CODE |
| M1A.4421 | Other secondary chronic gout, left hand, with tophus (tophi) | BILLABLE CODE |
| M1A.449 | Other secondary chronic gout, unspecified hand | NON-BILLABLE CODE |
| M1A.4490 | Other secondary chronic gout, unspecified hand, without tophus (tophi) | BILLABLE CODE |
| M1A.4491 | Other secondary chronic gout, unspecified hand, with tophus (tophi) | BILLABLE CODE |
| M1A.45 | Other secondary chronic gout, hip | NON-BILLABLE CODE |
| M1A.451 | Other secondary chronic gout, right hip | NON-BILLABLE CODE |
| M1A.4510 | Other secondary chronic gout, right hip, without tophus (tophi) | BILLABLE CODE |
| M1A.4511 | Other secondary chronic gout, right hip, with tophus (tophi) | BILLABLE CODE |
| M1A.452 | Other secondary chronic gout, left hip | NON-BILLABLE CODE |
| M1A.4520 | Other secondary chronic gout, left hip, without tophus (tophi) | BILLABLE CODE |
| M1A.4521 | Other secondary chronic gout, left hip, with tophus (tophi) | BILLABLE CODE |
| M1A.459 | Other secondary chronic gout, unspecified hip | NON-BILLABLE CODE |
| M1A.4590 | Other secondary chronic gout, unspecified hip, without tophus (tophi) | BILLABLE CODE |
| M1A.4591 | Other secondary chronic gout, unspecified hip, with tophus (tophi) | BILLABLE CODE |
| M1A.46 | Other secondary chronic gout, knee | NON-BILLABLE CODE |
| M1A.461 | Other secondary chronic gout, right knee | NON-BILLABLE CODE |
| M1A.4610 | Other secondary chronic gout, right knee, without tophus (tophi) | BILLABLE CODE |
| M1A.4611 | Other secondary chronic gout, right knee, with tophus (tophi) | BILLABLE CODE |
| M1A.462 | Other secondary chronic gout, left knee | NON-BILLABLE CODE |
| M1A.4620 | Other secondary chronic gout, left knee, without tophus (tophi) | BILLABLE CODE |
| M1A.4621 | Other secondary chronic gout, left knee, with tophus (tophi) | BILLABLE CODE |
| M1A.469 | Other secondary chronic gout, unspecified knee | NON-BILLABLE CODE |
| M1A.4690 | Other secondary chronic gout, unspecified knee, without tophus (tophi) | BILLABLE CODE |
| M1A.4691 | Other secondary chronic gout, unspecified knee, with tophus (tophi) | BILLABLE CODE |
| M1A.47 | Other secondary chronic gout, ankle and foot | NON-BILLABLE CODE |
| M1A.471 | Other secondary chronic gout, right ankle and foot | NON-BILLABLE CODE |
| M1A.4710 | Other secondary chronic gout, right ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.4711 | Other secondary chronic gout, right ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.472 | Other secondary chronic gout, left ankle and foot | NON-BILLABLE CODE |
| M1A.4720 | Other secondary chronic gout, left ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.4721 | Other secondary chronic gout, left ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.479 | Other secondary chronic gout, unspecified ankle and foot | NON-BILLABLE CODE |
| M1A.4790 | Other secondary chronic gout, unspecified ankle and foot, without tophus (tophi) | BILLABLE CODE |
| M1A.4791 | Other secondary chronic gout, unspecified ankle and foot, with tophus (tophi) | BILLABLE CODE |
| M1A.48 | Other secondary chronic gout, vertebrae | NON-BILLABLE CODE |
| M1A.48X0 | Other secondary chronic gout, vertebrae, without tophus (tophi) | BILLABLE CODE |
| M1A.48X1 | Other secondary chronic gout, vertebrae, with tophus (tophi) | BILLABLE CODE |
| M1A.49 | Other secondary chronic gout, multiple sites | NON-BILLABLE CODE |
| M1A.49X0 | Other secondary chronic gout, multiple sites, without tophus (tophi) | BILLABLE CODE |
| M1A.49X1 | Other secondary chronic gout, multiple sites, with tophus (tophi) | BILLABLE CODE |
| M1A.9 | Chronic gout, unspecified | NON-BILLABLE CODE |
| M1A.9XX0 | Chronic gout, unspecified, without tophus (tophi) | BILLABLE CODE |
| M1A.9XX1 | Chronic gout, unspecified, with tophus (tophi) | BILLABLE CODE |
