ICD-10 CM Code M23
M23
Internal derangement of knee
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M23.0 Cystic meniscus
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M23.2 Derangement of meniscus due to old tear or injury
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M23.3 Other meniscus derangements
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M23.4 Loose body in knee
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M23.5 Chronic instability of knee
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M23.6 Other spontaneous disruption of ligament(s) of knee
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M23.8 Other internal derangements of knee
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M23.9 Unspecified internal derangement of knee
Excludes Type 1
- ankylosis (M24.66)
- current injury - see injury of knee and lower leg (S80-S89)
- deformity of knee (M21.-)
- osteochondritis dissecans (M93.2)
- recurrent dislocation or subluxation of joints (M24.4)
- recurrent dislocation or subluxation of patella (M22.0-M22.1)
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