M23.05
Cystic meniscus, posterior horn of lateral meniscus
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 16 never code together
M23code
Excludes1
Excludes2
- current injury - see injury of knee and lower leg (S80-S89)S80-S89
- recurrent dislocation or subluxation of joints (M24.4)M24.4
- recurrent dislocation or subluxation of patella (M22.0-M22.1)M22.0-M22.1
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 2
Index entries leading here 1
Alongside this code 6 same parent — M23.0
M23.00 Cystic meniscus, unspecified meniscus category M23.01 Cystic meniscus, anterior horn of medial meniscus category M23.02 Cystic meniscus, posterior horn of medial meniscus category M23.03 Cystic meniscus, other medial meniscus category M23.04 Cystic meniscus, anterior horn of lateral meniscus category M23.06 Cystic meniscus, other lateral meniscus category
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.