M23 Non-Billable Code
Internal derangement of knee
Chapter Classification
Chapter 13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
Section Detail
M20-M25
Other joint disorders (M20-M25)
Coding Guidelines & Notes
excludes1
- ankylosis (M24.66)
- deformity of knee (M21.-)
- osteochondritis dissecans (M93.2)
excludes2
- 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)
More Specific Diagnosis Codes
This code is not billable as it requires a higher level of specificity. Select a more specific code below.
- M23.0 - Cystic meniscus
- M23.2 - Derangement of meniscus due to old tear or injury
- M23.3 - Other meniscus derangements
- M23.4 - Loose body in knee
- M23.5 - Chronic instability of knee
- M23.6 - Other spontaneous disruption of ligament(s) of knee
- M23.8 - Other internal derangements of knee
- M23.9 - Unspecified internal derangement of knee
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