Internal derangement of knee
Non-billable header
M23 is a non-billable header code. Use one of the more specific codes below.
Inclusion terms
Includes
- Note: Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- joints of the spine (M40-M54)
- 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 codes M23
- M23.0Cystic meniscusHeader
- M23.2Derangement of meniscus due to old tear or injuryHeader
- M23.3Other meniscus derangementsHeader
- M23.4Loose body in kneeHeader
- M23.5Chronic instability of kneeHeader
- M23.6Other spontaneous disruption of ligament(s) of kneeHeader
- M23.8Other internal derangements of kneeHeader
- M23.9Unspecified internal derangement of kneeHeader