| M21.70 | Unequal limb length (acquired), unspecified site | BILLABLE CODE |
| M21.72 | Unequal limb length (acquired), humerus | NON-BILLABLE CODE |
| M21.721 | Unequal limb length (acquired), right humerus | BILLABLE CODE |
| M21.722 | Unequal limb length (acquired), left humerus | BILLABLE CODE |
| M21.729 | Unequal limb length (acquired), unspecified humerus | BILLABLE CODE |
| M21.73 | Unequal limb length (acquired), ulna and radius | NON-BILLABLE CODE |
| M21.731 | Unequal limb length (acquired), right ulna | BILLABLE CODE |
| M21.732 | Unequal limb length (acquired), left ulna | BILLABLE CODE |
| M21.733 | Unequal limb length (acquired), right radius | BILLABLE CODE |
| M21.734 | Unequal limb length (acquired), left radius | BILLABLE CODE |
| M21.739 | Unequal limb length (acquired), unspecified ulna and radius | BILLABLE CODE |
| M21.75 | Unequal limb length (acquired), femur | NON-BILLABLE CODE |
| M21.751 | Unequal limb length (acquired), right femur | BILLABLE CODE |
| M21.752 | Unequal limb length (acquired), left femur | BILLABLE CODE |
| M21.759 | Unequal limb length (acquired), unspecified femur | BILLABLE CODE |
| M21.76 | Unequal limb length (acquired), tibia and fibula | NON-BILLABLE CODE |
| M21.761 | Unequal limb length (acquired), right tibia | BILLABLE CODE |
| M21.762 | Unequal limb length (acquired), left tibia | BILLABLE CODE |
| M21.763 | Unequal limb length (acquired), right fibula | BILLABLE CODE |
| M21.764 | Unequal limb length (acquired), left fibula | BILLABLE CODE |
| M21.769 | Unequal limb length (acquired), unspecified tibia and fibula | BILLABLE CODE |
