Excludes
- Current injury – see injury of knee and lower leg (S80-S89)
- Recurrent dislocation or subluxation of joints (M24.4)
- Recurrent dislocation or subluxation of patella (M22.0–M22.1)
- Ankylosis (M24.66)
- Deformity of knee (M21.-)
- Osteochondritis dissecans (M93.2)
148
- M23
- M23.0
- M23.00
- M23.000
- M23.001
- M23.002
- M23.003
- M23.004
- M23.005
- M23.006
- M23.007
- M23.009
- M23.01
- M23.011
- M23.012
- M23.019
- M23.02
- M23.021
- M23.022
- M23.029
- M23.03
- M23.031
- M23.032
- M23.039
- M23.04
- M23.041
- M23.042
- M23.049
- M23.05
- M23.051
- M23.052
- M23.059
- M23.06
- M23.061
- M23.062
- M23.069
- M23.2
- M23.20
- M23.200
- M23.201
- M23.202
- M23.203
- M23.204
- M23.205
- M23.206
- M23.207
- M23.209
- M23.21
- M23.211
- M23.212
- M23.219
- M23.22
- M23.221
- M23.222
- M23.229
- M23.23
- M23.231
- M23.232
- M23.239
- M23.24
- M23.241
- M23.242
- M23.249
- M23.25
- M23.251
- M23.252
- M23.259
- M23.26
- M23.261
- M23.262
- M23.269
- M23.3
- M23.30
- M23.300
- M23.301
- M23.302
- M23.303
- M23.304
- M23.305
- M23.306
- M23.307
- M23.309
- M23.31
- M23.311
- M23.312
- M23.319
- M23.32
- M23.321
- M23.322
- M23.329
- M23.33
- M23.331
- M23.332
- M23.339
- M23.34
- M23.341
- M23.342
- M23.349
- M23.35
- M23.351
- M23.352
- M23.359
- M23.36
- M23.361
- M23.362
- M23.369
- M23.4
- M23.40
- M23.41
- M23.42
- M23.5
- M23.50
- M23.51
- M23.52
- M23.6
- M23.60
- M23.601
- M23.602
- M23.609
- M23.61
- M23.611
- M23.612
- M23.619
- M23.62
- M23.621
- M23.622
- M23.629
- M23.63
- M23.631
- M23.632
- M23.639
- M23.64
- M23.641
- M23.642
- M23.649
- M23.67
- M23.671
- M23.672
- M23.679
- M23.8
- M23.8X
- M23.8X1
- M23.8X2
- M23.8X9
- M23.9
- M23.90
- M23.91
- M23.92
| | Internal derangement of knee |
| | Cystic meniscus |
| | Cystic meniscus, unspecified meniscus |
| | Cystic meniscus, unspecified lateral meniscus, right knee |
| | Cystic meniscus, unspecified lateral meniscus, left knee |
| | Cystic meniscus, unspecified lateral meniscus, unspecified knee |
| | Cystic meniscus, unspecified medial meniscus, right knee |
| | Cystic meniscus, unspecified medial meniscus, left knee |
| | Cystic meniscus, unspecified medial meniscus, unspecified knee |
| | Cystic meniscus, unspecified meniscus, right knee |
| | Cystic meniscus, unspecified meniscus, left knee |
| | Cystic meniscus, unspecified meniscus, unspecified knee |
| | Cystic meniscus, anterior horn of medial meniscus |
| | Cystic meniscus, anterior horn of medial meniscus, right knee |
| | Cystic meniscus, anterior horn of medial meniscus, left knee |
| | Cystic meniscus, anterior horn of medial meniscus, unspecified knee |
| | Cystic meniscus, posterior horn of medial meniscus |
| | Cystic meniscus, posterior horn of medial meniscus, right knee |
| | Cystic meniscus, posterior horn of medial meniscus, left knee |
| | Cystic meniscus, posterior horn of medial meniscus, unspecified knee |
| | Cystic meniscus, other medial meniscus |
| | Cystic meniscus, other medial meniscus, right knee |
| | Cystic meniscus, other medial meniscus, left knee |
| | Cystic meniscus, other medial meniscus, unspecified knee |
| | Cystic meniscus, anterior horn of lateral meniscus |
| | Cystic meniscus, anterior horn of lateral meniscus, right knee |
| | Cystic meniscus, anterior horn of lateral meniscus, left knee |
| | Cystic meniscus, anterior horn of lateral meniscus, unspecified knee |
| | Cystic meniscus, posterior horn of lateral meniscus |
| | Cystic meniscus, posterior horn of lateral meniscus, right knee |
| | Cystic meniscus, posterior horn of lateral meniscus, left knee |
| | Cystic meniscus, posterior horn of lateral meniscus, unspecified knee |
| | Cystic meniscus, other lateral meniscus |
| | Cystic meniscus, other lateral meniscus, right knee |
| | Cystic meniscus, other lateral meniscus, left knee |
| | Cystic meniscus, other lateral meniscus, unspecified knee |
| | Derangement of meniscus due to old tear or injury |
| | Derangement of unspecified meniscus due to old tear or injury |
| | Derangement of unspecified lateral meniscus due to old tear or injury, right knee |
| | Derangement of unspecified lateral meniscus due to old tear or injury, left knee |
| | Derangement of unspecified lateral meniscus due to old tear or injury, unspecified knee |
| | Derangement of unspecified medial meniscus due to old tear or injury, right knee |
| | Derangement of unspecified medial meniscus due to old tear or injury, left knee |
| | Derangement of unspecified medial meniscus due to old tear or injury, unspecified knee |
| | Derangement of unspecified meniscus due to old tear or injury, right knee |
| | Derangement of unspecified meniscus due to old tear or injury, left knee |
| | Derangement of unspecified meniscus due to old tear or injury, unspecified knee |
| | Derangement of anterior horn of medial meniscus due to old tear or injury |
| | Derangement of anterior horn of medial meniscus due to old tear or injury, right knee |
| | Derangement of anterior horn of medial meniscus due to old tear or injury, left knee |
| | Derangement of anterior horn of medial meniscus due to old tear or injury, unspecified knee |
| | Derangement of posterior horn of medial meniscus due to old tear or injury |
| | Derangement of posterior horn of medial meniscus due to old tear or injury, right knee |
| | Derangement of posterior horn of medial meniscus due to old tear or injury, left knee |
| | Derangement of posterior horn of medial meniscus due to old tear or injury, unspecified knee |
| | Derangement of other medial meniscus due to old tear or injury |
| | Derangement of other medial meniscus due to old tear or injury, right knee |
| | Derangement of other medial meniscus due to old tear or injury, left knee |
| | Derangement of other medial meniscus due to old tear or injury, unspecified knee |
| | Derangement of anterior horn of lateral meniscus due to old tear or injury |
| | Derangement of anterior horn of lateral meniscus due to old tear or injury, right knee |
| | Derangement of anterior horn of lateral meniscus due to old tear or injury, left knee |
| | Derangement of anterior horn of lateral meniscus due to old tear or injury, unspecified knee |
| | Derangement of posterior horn of lateral meniscus due to old tear or injury |
| | Derangement of posterior horn of lateral meniscus due to old tear or injury, right knee |
| | Derangement of posterior horn of lateral meniscus due to old tear or injury, left knee |
| | Derangement of posterior horn of lateral meniscus due to old tear or injury, unspecified knee |
| | Derangement of other lateral meniscus due to old tear or injury |
| | Derangement of other lateral meniscus due to old tear or injury, right knee |
| | Derangement of other lateral meniscus due to old tear or injury, left knee |
| | Derangement of other lateral meniscus due to old tear or injury, unspecified knee |
| | Other meniscus derangements |
| | Other meniscus derangements, unspecified meniscus |
| | Other meniscus derangements, unspecified lateral meniscus, right knee |
| | Other meniscus derangements, unspecified lateral meniscus, left knee |
| | Other meniscus derangements, unspecified lateral meniscus, unspecified knee |
| | Other meniscus derangements, unspecified medial meniscus, right knee |
| | Other meniscus derangements, unspecified medial meniscus, left knee |
| | Other meniscus derangements, unspecified medial meniscus, unspecified knee |
| | Other meniscus derangements, unspecified meniscus, right knee |
| | Other meniscus derangements, unspecified meniscus, left knee |
| | Other meniscus derangements, unspecified meniscus, unspecified knee |
| | Other meniscus derangements, anterior horn of medial meniscus |
| | Other meniscus derangements, anterior horn of medial meniscus, right knee |
| | Other meniscus derangements, anterior horn of medial meniscus, left knee |
| | Other meniscus derangements, anterior horn of medial meniscus, unspecified knee |
| | Other meniscus derangements, posterior horn of medial meniscus |
| | Other meniscus derangements, posterior horn of medial meniscus, right knee |
| | Other meniscus derangements, posterior horn of medial meniscus, left knee |
| | Other meniscus derangements, posterior horn of medial meniscus, unspecified knee |
| | Other meniscus derangements, other medial meniscus |
| | Other meniscus derangements, other medial meniscus, right knee |
| | Other meniscus derangements, other medial meniscus, left knee |
| | Other meniscus derangements, other medial meniscus, unspecified knee |
| | Other meniscus derangements, anterior horn of lateral meniscus |
| | Other meniscus derangements, anterior horn of lateral meniscus, right knee |
| | Other meniscus derangements, anterior horn of lateral meniscus, left knee |
| | Other meniscus derangements, anterior horn of lateral meniscus, unspecified knee |
| | Other meniscus derangements, posterior horn of lateral meniscus |
| | Other meniscus derangements, posterior horn of lateral meniscus, right knee |
| | Other meniscus derangements, posterior horn of lateral meniscus, left knee |
| | Other meniscus derangements, posterior horn of lateral meniscus, unspecified knee |
| | Other meniscus derangements, other lateral meniscus |
| | Other meniscus derangements, other lateral meniscus, right knee |
| | Other meniscus derangements, other lateral meniscus, left knee |
| | Other meniscus derangements, other lateral meniscus, unspecified knee |
| | Loose body in knee |
| | Loose body in knee, unspecified knee |
| | Loose body in knee, right knee |
| | Loose body in knee, left knee |
| | Chronic instability of knee |
| | Chronic instability of knee, unspecified knee |
| | Chronic instability of knee, right knee |
| | Chronic instability of knee, left knee |
| | Other spontaneous disruption of ligament(s) of knee |
| | Other spontaneous disruption of unspecified ligament of knee |
| | Other spontaneous disruption of unspecified ligament of right knee |
| | Other spontaneous disruption of unspecified ligament of left knee |
| | Other spontaneous disruption of unspecified ligament of unspecified knee |
| | Other spontaneous disruption of anterior cruciate ligament of knee |
| | Other spontaneous disruption of anterior cruciate ligament of right knee |
| | Other spontaneous disruption of anterior cruciate ligament of left knee |
| | Other spontaneous disruption of anterior cruciate ligament of unspecified knee |
| | Other spontaneous disruption of posterior cruciate ligament of knee |
| | Other spontaneous disruption of posterior cruciate ligament of right knee |
| | Other spontaneous disruption of posterior cruciate ligament of left knee |
| | Other spontaneous disruption of posterior cruciate ligament of unspecified knee |
| | Other spontaneous disruption of medial collateral ligament of knee |
| | Other spontaneous disruption of medial collateral ligament of right knee |
| | Other spontaneous disruption of medial collateral ligament of left knee |
| | Other spontaneous disruption of medial collateral ligament of unspecified knee |
| | Other spontaneous disruption of lateral collateral ligament of knee |
| | Other spontaneous disruption of lateral collateral ligament of right knee |
| | Other spontaneous disruption of lateral collateral ligament of left knee |
| | Other spontaneous disruption of lateral collateral ligament of unspecified knee |
| | Other spontaneous disruption of capsular ligament of knee |
| | Other spontaneous disruption of capsular ligament of right knee |
| | Other spontaneous disruption of capsular ligament of left knee |
| | Other spontaneous disruption of capsular ligament of unspecified knee |
| | Other internal derangements of knee |
| | Other internal derangements of knee |
| | Other internal derangements of right knee |
| | Other internal derangements of left knee |
| | Other internal derangements of unspecified knee |
| | Unspecified internal derangement of knee |
| | Unspecified internal derangement of unspecified knee |
| | Unspecified internal derangement of right knee |
| | Unspecified internal derangement of left knee |
