| M22 | Disorder of patella |
| | Recurrent dislocation of patella |
| | Recurrent dislocation of patella, unspecified knee |
| | Recurrent dislocation of patella, right knee |
| | Recurrent dislocation of patella, left knee |
| | Recurrent subluxation of patella |
| | Recurrent subluxation of patella, unspecified knee |
| | Recurrent subluxation of patella, right knee |
| | Recurrent subluxation of patella, left knee |
| | Patellofemoral disorders |
| | Patellofemoral disorders |
| | Patellofemoral disorders, right knee |
| | Patellofemoral disorders, left knee |
| | Patellofemoral disorders, unspecified knee |
| | Other derangements of patella |
| | Other derangements of patella |
| | Other derangements of patella, right knee |
| | Other derangements of patella, left knee |
| | Other derangements of patella, unspecified knee |
| | Chondromalacia patellae |
| | Chondromalacia patellae, unspecified knee |
| | Chondromalacia patellae, right knee |
| | Chondromalacia patellae, left knee |
| | Other disorders of patella |
| | Other disorders of patella |
| | Other disorders of patella, right knee |
| | Other disorders of patella, left knee |
| | Other disorders of patella, unspecified knee |
| | Unspecified disorder of patella |
| | Unspecified disorder of patella, unspecified knee |
| | Unspecified disorder of patella, right knee |
| | Unspecified disorder of patella, left knee |
