| M234 | Loose body in knee |
| M2340 | Loose body in knee, unspecified knee |
| M2341 | Loose body in knee, right knee |
| M2342 | Loose body in knee, left knee |
| M235 | Chronic instability of knee |
| M2350 | Chronic instability of knee, unspecified knee |
| M2351 | Chronic instability of knee, right knee |
| M2352 | Chronic instability of knee, left knee |
| M236 | Other spontaneous disruption of ligament(s) of knee |
| M2360 | Other spontaneous disruption of unspecified ligament of knee Other spontaneous disruption of unspecified ligament of knee |
| M23601 | Other spontaneous disruption of unspecified ligament of right knee |
| M23602 | Other spontaneous disruption of unspecified ligament of left knee |
| M23609 | Other spontaneous disruption of unspecified ligament of unspecified knee |
| M2361 | Other spontaneous disruption of anterior cruciate ligament of knee |
| M23611 | Oth spon disrupt of anterior cruciate ligament of right knee Other spontaneous disruption of anterior cruciate ligament of right knee |
| M23612 | Other spontaneous disruption of anterior cruciate ligament of left knee |
| M23619 | Other spontaneous disruption of anterior cruciate ligament of unspecified knee |
| M2362 | Other spontaneous disruption of posterior cruciate ligament of knee |
| M23621 | Other spontaneous disruption of posterior cruciate ligament of right knee |
| M23622 | Oth spon disrupt of posterior cruciate ligament of left knee Other spontaneous disruption of posterior cruciate ligament of left knee |
| M23629 | Oth spon disrupt of posterior cruciate ligament of unsp knee Other spontaneous disruption of posterior cruciate ligament of unspecified knee |
| M2363 | Other spontaneous disruption of medial collateral ligament of knee |
| M23631 | Other spontaneous disruption of medial collateral ligament of right knee |
| M23632 | Other spontaneous disruption of medial collateral ligament of left knee |
| M23639 | Other spontaneous disruption of medial collateral ligament of unspecified knee |
| M2364 | Other spontaneous disruption of lateral collateral ligament of knee |
| M23641 | Oth spon disruption of lateral collat ligament of right knee Other spontaneous disruption of lateral collateral ligament of right knee |
| M23642 | Other spontaneous disruption of lateral collateral ligament of left knee |
| M23649 | Other spontaneous disruption of lateral collateral ligament of unspecified knee |
| M2367 | Other spontaneous disruption of capsular ligament of knee |
| M23671 | Other spontaneous disruption of capsular ligament of right knee |
| M23672 | Oth spontaneous disruption of capsular ligament of left knee Other spontaneous disruption of capsular ligament of left knee |
| M23679 | Oth spontaneous disruption of capsular ligament of unsp knee Other spontaneous disruption of capsular ligament of unspecified knee |
| M238 | Other internal derangements of knee |
| M238X | Other internal derangements of knee |
| M238X1 | Other internal derangements of right knee |
| M238X2 | Other internal derangements of left knee |
| M238X9 | Other internal derangements of unspecified knee |
| M239 | Unspecified internal derangement of knee |
| M2390 | Unspecified internal derangement of unspecified knee |
| M2391 | Unspecified internal derangement of right knee |
| M2392 | Unspecified internal derangement of left knee |
| M24 | Other specific joint derangements |
| M240 | Loose body in joint |
| M2400 | Loose body in unspecified joint |
| M2401 | Loose body in shoulder |
| M24011 | Loose body in right shoulder |
| M24012 | Loose body in left shoulder |
| M24019 | Loose body in unspecified shoulder |
| M2402 | Loose body in elbow |