ICD-10-CM › M00-M99 › M20-M25 › M23.2 Derangement of meniscus due to old... › M23.21
Derangement of anterior horn of medial meniscus due to old tear or injury
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 3 more specific codes instead:
What has happened to this code
Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2012 Added to the draft code set draft Derangement of anterior horn of medial meniscus due to old tear or injury
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from M23 Internal derangement of knee
Excludes1 - never coded here
- ankylosis (M24.66)
- deformity of knee (M21.-)
- osteochondritis dissecans (M93.2)
Excludes2 - not included here
- 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)
Inherited from the M20-M25 section Other joint disorders (M20-M25)
Excludes2 - not included here
- joints of the spine (M40-M54)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Change > joint
- Mushrooming hip
- Snapping > knee
- Sprain > scapula
- Change > hip joint
- Avulsion > ligament
- Disorder > meniscus
- Division > ligament
- Retention > meniscus
- Detachment > ligament
- Disruption > ligament
- Laceration > ligament
- Laceration > meniscus
- Tear, torn > ligament
- Derangement > meniscus
- Derangement > shoulder
- Detachment > cartilage
- Dislocation > meniscus
- Locking > joint > knee
- Tear, torn > cartilage
- Hemarthrosis > traumatic
- Avulsion > joint > capsule
- Derangement > joint > knee
- Injury > shoulder > sprain
- Laceration > joint capsule
- Tear, torn > bucket handle
- Laceration > capsule, joint
- Tear, torn > capsule, joint
- Tear, torn > meniscus > old
- Rupture, ruptured > meniscus
- Lax, laxity > ligament > knee
- Rupture, ruptured > cartilage
- Bucket-handle fracture or tear
- Cicatrix > semilunar cartilage
- Cyst > intraligamentous > knee
- Disorder > joint > derangement
- Synovitis > traumatic, current
- Sprain > shoulder joint > blade
- Subluxation > ligament, traumatic
- Tear, torn > knee cartilage > old
Showing 40 of 64 index phrases.
Codes in the same group
| Code | Description | Status |
|---|---|---|
| M23.20 | Derangement of unspecified meniscus due to old tear or injury | Not billable |
| M23.22 | Derangement of posterior horn of medial meniscus due to old tear or injury | Not billable |
| M23.23 | Derangement of other medial meniscus due to old tear or injury | Not billable |
| M23.24 | Derangement of anterior horn of lateral meniscus due to old tear or injury | Not billable |
| M23.25 | Derangement of posterior horn of lateral meniscus due to old tear or injury | Not billable |
| M23.26 | Derangement of other lateral meniscus due to old tear or injury | Not billable |