M23.00
Header — not billableCystic meniscus, unspecified meniscus
The ICD-10 code for cystic meniscus, unspecified meniscus is M23.00.
M23.00 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 9 more specific codes below.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Cystic meniscus, unspecified lateral meniscus
- Cystic meniscus, unspecified medial meniscus
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under M23.00
- M23.000Cystic meniscus, unspecified lateral meniscus, right knee
- M23.001Cystic meniscus, unspecified lateral meniscus, left knee
- M23.002Cystic meniscus, unspecified lateral meniscus, unspecified knee
- M23.003Cystic meniscus, unspecified medial meniscus, right knee
- M23.004Cystic meniscus, unspecified medial meniscus, left knee
- M23.005Cystic meniscus, unspecified medial meniscus, unspecified knee
- M23.006Cystic meniscus, unspecified meniscus, right knee
- M23.007Cystic meniscus, unspecified meniscus, left knee
- M23.009Cystic meniscus, unspecified meniscus, unspecified knee
Related codes in this category
- M23.01Cystic meniscus, anterior horn of medial meniscusnon-billable header
- M23.02Cystic meniscus, posterior horn of medial meniscusnon-billable header
- M23.03Cystic meniscus, other medial meniscusnon-billable header
- M23.04Cystic meniscus, anterior horn of lateral meniscusnon-billable header
- M23.05Cystic meniscus, posterior horn of lateral meniscusnon-billable header
- M23.06Cystic meniscus, other lateral meniscusnon-billable header
- M23.00Cystic meniscus, unspecified meniscusnon-billable header