ICD-10-CM diagnosis code
M23.069 Cystic meniscus, other lateral meniscus, unspecified knee
- Billable
- Yes, a complete code (FY2026)
- Category
- M23 Internal derangement of knee
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Other codes in M23
111 complete codes in this category.
- M23.049Cystic meniscus, anterior horn of lateral meniscus, unspecified knee
- M23.051Cystic meniscus, posterior horn of lateral meniscus, right knee
- M23.052Cystic meniscus, posterior horn of lateral meniscus, left knee
- M23.059Cystic meniscus, posterior horn of lateral meniscus, unspecified knee
- M23.061Cystic meniscus, other lateral meniscus, right knee
- M23.062Cystic meniscus, other lateral meniscus, left knee
- M23.069Cystic meniscus, other lateral meniscus, unspecified knee
- M23.200Derangement of unspecified lateral meniscus due to old tear or injury, right knee
- M23.201Derangement of unspecified lateral meniscus due to old tear or injury, left knee
- M23.202Derangement of unspecified lateral meniscus due to old tear or injury, unspecified knee
- M23.203Derangement of unspecified medial meniscus due to old tear or injury, right knee
- M23.204Derangement of unspecified medial meniscus due to old tear or injury, left knee
Documentation tips
- Make sure the note supports every element of the title, “Cystic meniscus, other lateral meniscus, unspecified knee”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to M23.
The international WHO ICD-10 also has M23, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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