| M25261 | Flail joint, right knee |
| M25262 | Flail joint, left knee |
| M25269 | Flail joint, unspecified knee |
| M2527 | Flail joint, ankle and foot |
| M25271 | Flail joint, right ankle and foot |
| M25272 | Flail joint, left ankle and foot |
| M25279 | Flail joint, unspecified ankle and foot |
| M2528 | Flail joint, other site |
| M253 | Other instability of joint |
| M2530 | Other instability, unspecified joint |
| M2531 | Other instability, shoulder |
| M25311 | Other instability, right shoulder |
| M25312 | Other instability, left shoulder |
| M25319 | Other instability, unspecified shoulder |
| M2532 | Other instability, elbow |
| M25321 | Other instability, right elbow |
| M25322 | Other instability, left elbow |
| M25329 | Other instability, unspecified elbow |
| M2533 | Other instability, wrist |
| M25331 | Other instability, right wrist |
| M25332 | Other instability, left wrist |
| M25339 | Other instability, unspecified wrist |
| M2534 | Other instability, hand |
| M25341 | Other instability, right hand |
| M25342 | Other instability, left hand |
| M25349 | Other instability, unspecified hand |
| M2535 | Other instability, hip |
| M25351 | Other instability, right hip |
| M25352 | Other instability, left hip |
| M25359 | Other instability, unspecified hip |
| M2536 | Other instability, knee |
| M25361 | Other instability, right knee |
| M25362 | Other instability, left knee |
| M25369 | Other instability, unspecified knee |
| M2537 | Other instability, ankle and foot |
| M25371 | Other instability, right ankle |
| M25372 | Other instability, left ankle |
| M25373 | Other instability, unspecified ankle |
| M25374 | Other instability, right foot |
| M25375 | Other instability, left foot |
| M25376 | Other instability, unspecified foot |
| M2539 | Other instability, other specified joint |
| M254 | Effusion of joint |
| M2540 | Effusion, unspecified joint |
| M2541 | Effusion, shoulder |
| M25411 | Effusion, right shoulder |
| M25412 | Effusion, left shoulder |
| M25419 | Effusion, unspecified shoulder |
| M2542 | Effusion, elbow |
| M25421 | Effusion, right elbow |