| M23231 | Derangement of other medial meniscus due to old tear or injury, right knee |
| M23232 | Derangement of other medial meniscus due to old tear or injury, left knee |
| M23239 | Derangement of other medial meniscus due to old tear or injury, unspecified knee |
| M2324 | Derangement of anterior horn of lateral meniscus due to old tear or injury |
| M23241 | Derangement of anterior horn of lateral meniscus due to old tear or injury, right knee |
| M23242 | Derangement of anterior horn of lateral meniscus due to old tear or injury, left knee |
| M23249 | Derangement of anterior horn of lateral meniscus due to old tear or injury, unspecified knee |
| M2325 | Derangement of posterior horn of lateral meniscus due to old tear or injury |
| M23251 | Derang of post horn of lat mensc due to old tear/inj, r knee Derangement of posterior horn of lateral meniscus due to old tear or injury, right knee |
| M23252 | Derang of post horn of lat mensc due to old tear/inj, l knee Derangement of posterior horn of lateral meniscus due to old tear or injury, left knee |
| M23259 | Derang of post horn of lat mensc d/t old tear/inj, unsp knee Derangement of posterior horn of lateral meniscus due to old tear or injury, unspecified knee |
| M2326 | Derangement of other lateral meniscus due to old tear or injury |
| M23261 | Derangement of other lateral meniscus due to old tear or injury, right knee |
| M23262 | Derangement of other lateral meniscus due to old tear or injury, left knee |
| M23269 | Derangement of other lateral meniscus due to old tear or injury, unspecified knee |
| M233 | Other meniscus derangements |
| M2330 | Other meniscus derangements, unspecified meniscus |
| M23300 | Oth meniscus derangements, unsp lateral meniscus, right knee Other meniscus derangements, unspecified lateral meniscus, right knee |
| M23301 | Other meniscus derangements, unspecified lateral meniscus, left knee |
| M23302 | Other meniscus derangements, unspecified lateral meniscus, unspecified knee |
| M23303 | Other meniscus derangements, unspecified medial meniscus, right knee |
| M23304 | Other meniscus derangements, unsp medial meniscus, left knee Other meniscus derangements, unspecified medial meniscus, left knee |
| M23305 | Other meniscus derangements, unsp medial meniscus, unsp knee Other meniscus derangements, unspecified medial meniscus, unspecified knee |
| M23306 | Other meniscus derangements, unspecified meniscus, right knee |
| M23307 | Other meniscus derangements, unspecified meniscus, left knee Other meniscus derangements, unspecified meniscus, left knee |
| M23309 | Other meniscus derangements, unsp meniscus, unspecified knee Other meniscus derangements, unspecified meniscus, unspecified knee |
| M2331 | Other meniscus derangements, anterior horn of medial meniscus |
| M23311 | Other meniscus derangements, anterior horn of medial meniscus, right knee |
| M23312 | Other meniscus derangements, anterior horn of medial meniscus, left knee |
| M23319 | Other meniscus derangements, anterior horn of medial meniscus, unspecified knee |
| M2332 | Oth meniscus derangements, posterior horn of medial meniscus Other meniscus derangements, posterior horn of medial meniscus |
| M23321 | Other meniscus derangements, posterior horn of medial meniscus, right knee |
| M23322 | Other meniscus derangements, posterior horn of medial meniscus, left knee |
| M23329 | Oth meniscus derang, post horn of medial meniscus, unsp knee Other meniscus derangements, posterior horn of medial meniscus, unspecified knee |
| M2333 | Other meniscus derangements, other medial meniscus |
| M23331 | Oth meniscus derangements, other medial meniscus, right knee Other meniscus derangements, other medial meniscus, right knee |
| M23332 | Other meniscus derangements, other medial meniscus, left knee |
| M23339 | Other meniscus derangements, other medial meniscus, unspecified knee |
| M2334 | Oth meniscus derangements, anterior horn of lateral meniscus Other meniscus derangements, anterior horn of lateral meniscus |
| M23341 | Other meniscus derangements, anterior horn of lateral meniscus, right knee |
| M23342 | Other meniscus derangements, anterior horn of lateral meniscus, left knee |
| M23349 | Other meniscus derangements, anterior horn of lateral meniscus, unspecified knee |
| M2335 | Other meniscus derangements, posterior horn of lateral meniscus |
| M23351 | Oth meniscus derang, posterior horn of lat mensc, right knee Other meniscus derangements, posterior horn of lateral meniscus, right knee |
| M23352 | Other meniscus derangements, posterior horn of lateral meniscus, left knee |
| M23359 | Other meniscus derangements, posterior horn of lateral meniscus, unspecified knee |
| M2336 | Other meniscus derangements, other lateral meniscus |
| M23361 | Other meniscus derangements, other lateral meniscus, right knee |
| M23362 | Oth meniscus derangements, other lateral meniscus, left knee Other meniscus derangements, other lateral meniscus, left knee |
| M23369 | Oth meniscus derangements, other lateral meniscus, unsp knee Other meniscus derangements, other lateral meniscus, unspecified knee |