| M13.80 | Other specified arthritis, unspecified site | BILLABLE CODE |
| M13.81 | Other specified arthritis, shoulder | NON-BILLABLE CODE |
| M13.811 | Other specified arthritis, right shoulder | BILLABLE CODE |
| M13.812 | Other specified arthritis, left shoulder | BILLABLE CODE |
| M13.819 | Other specified arthritis, unspecified shoulder | BILLABLE CODE |
| M13.82 | Other specified arthritis, elbow | NON-BILLABLE CODE |
| M13.821 | Other specified arthritis, right elbow | BILLABLE CODE |
| M13.822 | Other specified arthritis, left elbow | BILLABLE CODE |
| M13.829 | Other specified arthritis, unspecified elbow | BILLABLE CODE |
| M13.83 | Other specified arthritis, wrist | NON-BILLABLE CODE |
| M13.831 | Other specified arthritis, right wrist | BILLABLE CODE |
| M13.832 | Other specified arthritis, left wrist | BILLABLE CODE |
| M13.839 | Other specified arthritis, unspecified wrist | BILLABLE CODE |
| M13.84 | Other specified arthritis, hand | NON-BILLABLE CODE |
| M13.841 | Other specified arthritis, right hand | BILLABLE CODE |
| M13.842 | Other specified arthritis, left hand | BILLABLE CODE |
| M13.849 | Other specified arthritis, unspecified hand | BILLABLE CODE |
| M13.85 | Other specified arthritis, hip | NON-BILLABLE CODE |
| M13.851 | Other specified arthritis, right hip | BILLABLE CODE |
| M13.852 | Other specified arthritis, left hip | BILLABLE CODE |
| M13.859 | Other specified arthritis, unspecified hip | BILLABLE CODE |
| M13.86 | Other specified arthritis, knee | NON-BILLABLE CODE |
| M13.861 | Other specified arthritis, right knee | BILLABLE CODE |
| M13.862 | Other specified arthritis, left knee | BILLABLE CODE |
| M13.869 | Other specified arthritis, unspecified knee | BILLABLE CODE |
| M13.87 | Other specified arthritis, ankle and foot | NON-BILLABLE CODE |
| M13.871 | Other specified arthritis, right ankle and foot | BILLABLE CODE |
| M13.872 | Other specified arthritis, left ankle and foot | BILLABLE CODE |
| M13.879 | Other specified arthritis, unspecified ankle and foot | BILLABLE CODE |
| M13.88 | Other specified arthritis, other site | BILLABLE CODE |
| M13.89 | Other specified arthritis, multiple sites | BILLABLE CODE |
