M23 Internal derangement of knee

Non-Billable/Non-Specific

Type 1 Excludes

ankylosis (M24.66)
deformity of knee (M21.-)
osteochondritis dissecans (M93.2)

Type 2 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)

Codes

M23.0Cystic meniscus
- M23.00Cystic meniscus, unspecified meniscus
  M23.000Cystic meniscus, unspecified lateral meniscus, right knee
  M23.001Cystic meniscus, unspecified lateral meniscus, left knee
  M23.002Cystic meniscus, unspecified lateral meniscus, unspecified knee
  M23.003Cystic meniscus, unspecified medial meniscus, right knee
  M23.004Cystic meniscus, unspecified medial meniscus, left knee
  M23.005Cystic meniscus, unspecified medial meniscus, unspecified knee
  M23.006Cystic meniscus, unspecified meniscus, right knee
  M23.007Cystic meniscus, unspecified meniscus, left knee
  M23.009Cystic meniscus, unspecified meniscus, unspecified knee
- M23.01Cystic meniscus, anterior horn of medial meniscus
  M23.011Cystic meniscus, anterior horn of medial meniscus, right knee
  M23.012Cystic meniscus, anterior horn of medial meniscus, left knee
  M23.019Cystic meniscus, anterior horn of medial meniscus, unspecified knee
- M23.02Cystic meniscus, posterior horn of medial meniscus
  M23.021Cystic meniscus, posterior horn of medial meniscus, right knee
  M23.022Cystic meniscus, posterior horn of medial meniscus, left knee
  M23.029Cystic meniscus, posterior horn of medial meniscus, unspecified knee
- M23.03Cystic meniscus, other medial meniscus
  M23.031Cystic meniscus, other medial meniscus, right knee
  M23.032Cystic meniscus, other medial meniscus, left knee
  M23.039Cystic meniscus, other medial meniscus, unspecified knee
- M23.04Cystic meniscus, anterior horn of lateral meniscus
  M23.041Cystic meniscus, anterior horn of lateral meniscus, right knee
  M23.042Cystic meniscus, anterior horn of lateral meniscus, left knee
  M23.049Cystic meniscus, anterior horn of lateral meniscus, unspecified knee
- M23.05Cystic meniscus, posterior horn of lateral meniscus
  M23.051Cystic meniscus, posterior horn of lateral meniscus, right knee
  M23.052Cystic meniscus, posterior horn of lateral meniscus, left knee
  M23.059Cystic meniscus, posterior horn of lateral meniscus, unspecified knee
- M23.06Cystic meniscus, other lateral meniscus
  M23.061Cystic meniscus, other lateral meniscus, right knee
  M23.062Cystic meniscus, other lateral meniscus, left knee
  M23.069Cystic meniscus, other lateral meniscus, unspecified knee
M23.2Derangement of meniscus due to old tear or injury
- M23.20Derangement of unspecified meniscus due to old tear or injury
  M23.200Derangement of unspecified lateral meniscus due to old tear or injury, right knee
  M23.201Derangement of unspecified lateral meniscus due to old tear or injury, left knee
  M23.202Derangement of unspecified lateral meniscus due to old tear or injury, unspecified knee
  M23.203Derangement of unspecified medial meniscus due to old tear or injury, right knee
  M23.204Derangement of unspecified medial meniscus due to old tear or injury, left knee
  M23.205Derangement of unspecified medial meniscus due to old tear or injury, unspecified knee
  M23.206Derangement of unspecified meniscus due to old tear or injury, right knee
  M23.207Derangement of unspecified meniscus due to old tear or injury, left knee
  M23.209Derangement of unspecified meniscus due to old tear or injury, unspecified knee
- M23.21Derangement of anterior horn of medial meniscus due to old tear or injury
  M23.211Derangement of anterior horn of medial meniscus due to old tear or injury, right knee
  M23.212Derangement of anterior horn of medial meniscus due to old tear or injury, left knee
  M23.219Derangement of anterior horn of medial meniscus due to old tear or injury, unspecified knee
- M23.22Derangement of posterior horn of medial meniscus due to old tear or injury
  M23.221Derangement of posterior horn of medial meniscus due to old tear or injury, right knee
  M23.222Derangement of posterior horn of medial meniscus due to old tear or injury, left knee
  M23.229Derangement of posterior horn of medial meniscus due to old tear or injury, unspecified knee
- M23.23Derangement of other medial meniscus due to old tear or injury
  M23.231Derangement of other medial meniscus due to old tear or injury, right knee
  M23.232Derangement of other medial meniscus due to old tear or injury, left knee
  M23.239Derangement of other medial meniscus due to old tear or injury, unspecified knee
- M23.24Derangement of anterior horn of lateral meniscus due to old tear or injury
  M23.241Derangement of anterior horn of lateral meniscus due to old tear or injury, right knee
  M23.242Derangement of anterior horn of lateral meniscus due to old tear or injury, left knee
  M23.249Derangement of anterior horn of lateral meniscus due to old tear or injury, unspecified knee
- M23.25Derangement of posterior horn of lateral meniscus due to old tear or injury
  M23.251Derangement of posterior horn of lateral meniscus due to old tear or injury, right knee
  M23.252Derangement of posterior horn of lateral meniscus due to old tear or injury, left knee
  M23.259Derangement of posterior horn of lateral meniscus due to old tear or injury, unspecified knee
- M23.26Derangement of other lateral meniscus due to old tear or injury
  M23.261Derangement of other lateral meniscus due to old tear or injury, right knee
  M23.262Derangement of other lateral meniscus due to old tear or injury, left knee
  M23.269Derangement of other lateral meniscus due to old tear or injury, unspecified knee
M23.3Other meniscus derangements
- M23.30Other meniscus derangements, unspecified meniscus
  M23.300Other meniscus derangements, unspecified lateral meniscus, right knee
  M23.301Other meniscus derangements, unspecified lateral meniscus, left knee
  M23.302Other meniscus derangements, unspecified lateral meniscus, unspecified knee
  M23.303Other meniscus derangements, unspecified medial meniscus, right knee
  M23.304Other meniscus derangements, unspecified medial meniscus, left knee
  M23.305Other meniscus derangements, unspecified medial meniscus, unspecified knee
  M23.306Other meniscus derangements, unspecified meniscus, right knee
  M23.307Other meniscus derangements, unspecified meniscus, left knee
  M23.309Other meniscus derangements, unspecified meniscus, unspecified knee
- M23.31Other meniscus derangements, anterior horn of medial meniscus
  M23.311Other meniscus derangements, anterior horn of medial meniscus, right knee
  M23.312Other meniscus derangements, anterior horn of medial meniscus, left knee
  M23.319Other meniscus derangements, anterior horn of medial meniscus, unspecified knee
- M23.32Other meniscus derangements, posterior horn of medial meniscus
  M23.321Other meniscus derangements, posterior horn of medial meniscus, right knee
  M23.322Other meniscus derangements, posterior horn of medial meniscus, left knee
  M23.329Other meniscus derangements, posterior horn of medial meniscus, unspecified knee
- M23.33Other meniscus derangements, other medial meniscus
  M23.331Other meniscus derangements, other medial meniscus, right knee
  M23.332Other meniscus derangements, other medial meniscus, left knee
  M23.339Other meniscus derangements, other medial meniscus, unspecified knee
- M23.34Other meniscus derangements, anterior horn of lateral meniscus
  M23.341Other meniscus derangements, anterior horn of lateral meniscus, right knee
  M23.342Other meniscus derangements, anterior horn of lateral meniscus, left knee
  M23.349Other meniscus derangements, anterior horn of lateral meniscus, unspecified knee
- M23.35Other meniscus derangements, posterior horn of lateral meniscus
  M23.351Other meniscus derangements, posterior horn of lateral meniscus, right knee
  M23.352Other meniscus derangements, posterior horn of lateral meniscus, left knee
  M23.359Other meniscus derangements, posterior horn of lateral meniscus, unspecified knee
- M23.36Other meniscus derangements, other lateral meniscus
  M23.361Other meniscus derangements, other lateral meniscus, right knee
  M23.362Other meniscus derangements, other lateral meniscus, left knee
  M23.369Other meniscus derangements, other lateral meniscus, unspecified knee
M23.4Loose body in knee
- M23.40Loose body in knee, unspecified knee
- M23.41Loose body in knee, right knee
- M23.42Loose body in knee, left knee
M23.5Chronic instability of knee
- M23.50Chronic instability of knee, unspecified knee
- M23.51Chronic instability of knee, right knee
- M23.52Chronic instability of knee, left knee
M23.6Other spontaneous disruption of ligament(s) of knee
- M23.60Other spontaneous disruption of unspecified ligament of knee
  M23.601Other spontaneous disruption of unspecified ligament of right knee
  M23.602Other spontaneous disruption of unspecified ligament of left knee
  M23.609Other spontaneous disruption of unspecified ligament of unspecified knee
- M23.61Other spontaneous disruption of anterior cruciate ligament of knee
  M23.611Other spontaneous disruption of anterior cruciate ligament of right knee
  M23.612Other spontaneous disruption of anterior cruciate ligament of left knee
  M23.619Other spontaneous disruption of anterior cruciate ligament of unspecified knee
- M23.62Other spontaneous disruption of posterior cruciate ligament of knee
  M23.621Other spontaneous disruption of posterior cruciate ligament of right knee
  M23.622Other spontaneous disruption of posterior cruciate ligament of left knee
  M23.629Other spontaneous disruption of posterior cruciate ligament of unspecified knee
- M23.63Other spontaneous disruption of medial collateral ligament of knee
  M23.631Other spontaneous disruption of medial collateral ligament of right knee
  M23.632Other spontaneous disruption of medial collateral ligament of left knee
  M23.639Other spontaneous disruption of medial collateral ligament of unspecified knee
- M23.64Other spontaneous disruption of lateral collateral ligament of knee
  M23.641Other spontaneous disruption of lateral collateral ligament of right knee
  M23.642Other spontaneous disruption of lateral collateral ligament of left knee
  M23.649Other spontaneous disruption of lateral collateral ligament of unspecified knee
- M23.67Other spontaneous disruption of capsular ligament of knee
  M23.671Other spontaneous disruption of capsular ligament of right knee
  M23.672Other spontaneous disruption of capsular ligament of left knee
  M23.679Other spontaneous disruption of capsular ligament of unspecified knee
M23.8Other internal derangements of knee
- M23.8XOther internal derangements of knee
  M23.8X1Other internal derangements of right knee
  M23.8X2Other internal derangements of left knee
  M23.8X9Other internal derangements of unspecified knee
M23.9Unspecified internal derangement of knee
- M23.90Unspecified internal derangement of unspecified knee
- M23.91Unspecified internal derangement of right knee
- M23.92Unspecified internal derangement of left knee