ICD-10-CM › M00-M99 › M20-M25 › M23 Internal derangement of knee › M23.0
Cystic meniscus
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 7 more specific codes instead:
- M23.00 Cystic meniscus, unspecified meniscus (also a header)
- M23.01 Cystic meniscus, anterior horn of medial meniscus (also a header)
- M23.02 Cystic meniscus, posterior horn of medial meniscus (also a header)
- M23.03 Cystic meniscus, other medial meniscus (also a header)
- M23.04 Cystic meniscus, anterior horn of lateral meniscus (also a header)
- M23.05 Cystic meniscus, posterior horn of lateral meniscus (also a header)
- M23.06 Cystic meniscus, other lateral meniscus (also a header)
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 Cystic meniscus
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
- Cystic > meniscus
- Change > hip joint
- Avulsion > ligament
- Disorder > meniscus
- Division > ligament
- Retention > meniscus
- Cyst > meniscus, knee
- 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
- Cyst > semilunar cartilage
- 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
Showing 40 of 68 index phrases.
Codes in the same group
| Code | Description | Status |
|---|---|---|
| M23.2 | Derangement of meniscus due to old tear or injury | Not billable |
| M23.3 | Other meniscus derangements | Not billable |
| M23.4 | Loose body in knee | Not billable |
| M23.5 | Chronic instability of knee | Not billable |
| M23.6 | Other spontaneous disruption of ligament(s) of knee | Not billable |
| M23.8 | Other internal derangements of knee | Not billable |
| M23.9 | Unspecified internal derangement of knee | Not billable |