M23.059: Cystic meniscus, posterior horn of lateral meniscus, unspecified knee
M23.059 is the billable ICD-10-CM diagnosis code for Cystic meniscus, posterior horn of lateral meniscus, unspecified knee. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code M23.059?
M23.059 is the ICD-10-CM diagnosis code for Cystic meniscus, posterior horn of lateral meniscus, unspecified knee. It belongs to category M23 (Internal derangement of knee).
Is M23.059 a billable code?
Yes. M23.059 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does M23.059 belong to?
M23.059 is part of ICD-10-CM category M23 — Internal derangement of knee, which has 222 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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