M23.0
Non-Billable

Cystic meniscus

Non-Billable / Non-Specific Code

What is Cystic meniscus?

ICD-10-CM M23.0 is the diagnosis code for Cystic meniscus. This code falls under the section "Other joint disorders" within Chapter 13 — Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

Coding Guidelines for M23.0

Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.

ICD-10-CM Code Hierarchy

Understanding where M23.0 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 7 entries
M23.00Cystic meniscus, unspecified meniscusNon-BillableM23.000Cystic meniscus, unspecified lateral meniscus, right kneeBillableM23.001Cystic meniscus, unspecified lateral meniscus, left kneeBillableM23.002Cystic meniscus, unspecified lateral meniscus, unspecified kneeBillableM23.003Cystic meniscus, unspecified medial meniscus, right kneeBillableM23.004Cystic meniscus, unspecified medial meniscus, left kneeBillableM23.005Cystic meniscus, unspecified medial meniscus, unspecified kneeBillableM23.006Cystic meniscus, unspecified meniscus, right kneeBillableM23.007Cystic meniscus, unspecified meniscus, left kneeBillableM23.009Cystic meniscus, unspecified meniscus, unspecified kneeBillableM23.01Cystic meniscus, anterior horn of medial meniscusNon-BillableM23.011Cystic meniscus, anterior horn of medial meniscus, right kneeBillableM23.012Cystic meniscus, anterior horn of medial meniscus, left kneeBillableM23.019Cystic meniscus, anterior horn of medial meniscus, unspecified kneeBillableM23.02Cystic meniscus, posterior horn of medial meniscusNon-BillableM23.021Cystic meniscus, posterior horn of medial meniscus, right kneeBillableM23.022Cystic meniscus, posterior horn of medial meniscus, left kneeBillableM23.029Cystic meniscus, posterior horn of medial meniscus, unspecified kneeBillableM23.03Cystic meniscus, other medial meniscusNon-BillableM23.031Cystic meniscus, other medial meniscus, right kneeBillableM23.032Cystic meniscus, other medial meniscus, left kneeBillableM23.039Cystic meniscus, other medial meniscus, unspecified kneeBillableM23.04Cystic meniscus, anterior horn of lateral meniscusNon-BillableM23.041Cystic meniscus, anterior horn of lateral meniscus, right kneeBillableM23.042Cystic meniscus, anterior horn of lateral meniscus, left kneeBillableM23.049Cystic meniscus, anterior horn of lateral meniscus, unspecified kneeBillableM23.05Cystic meniscus, posterior horn of lateral meniscusNon-BillableM23.051Cystic meniscus, posterior horn of lateral meniscus, right kneeBillableM23.052Cystic meniscus, posterior horn of lateral meniscus, left kneeBillableM23.059Cystic meniscus, posterior horn of lateral meniscus, unspecified kneeBillableM23.06Cystic meniscus, other lateral meniscusNon-BillableM23.061Cystic meniscus, other lateral meniscus, right kneeBillableM23.062Cystic meniscus, other lateral meniscus, left kneeBillableM23.069Cystic meniscus, other lateral meniscus, unspecified kneeBillable
Related Codes

Frequently Asked Questions

Is M23.0 a billable ICD-10-CM code?

No, M23.0 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does M23.0 mean?

M23.0 is the ICD-10-CM diagnosis code for "Cystic meniscus". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of M23.0?

The parent code of M23.0 is M23 ("Internal derangement of knee"). M23.0 provides a more specific classification within this category.

What section is M23.0 in?

M23.0 is located in Section M20-M25 — "Other joint disorders" within Chapter 13 of the ICD-10-CM Tabular List.

What are the sub-codes of M23.0?

M23.0 has 7 sub-code(s) that provide more specific detail: M23.00, M23.01, M23.02, M23.03, M23.04 and more.

When should I use M23.0?

Use M23.0 when the patients documented diagnosis matches "Cystic meniscus" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Cystic meniscus?

The ICD-10-CM code for Cystic meniscus is M23.0.

Can M23.0 be used for primary diagnosis?

No, M23.0 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is M23.0 in?

M23.0 is in Chapter 13 of the ICD-10-CM Tabular List.

Is M23.0 valid for 2026?

Yes, M23.0 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousM23Internal derangement of kneeNext →M23.00Cystic meniscus, unspecified meniscus
Code Details
M23.0
Cystic meniscus
Non-Billable / Non-Specific Code
13 — Diseases of the musculoskeletal system and connective tissue (M00-M99)
M20-M25 — Other joint disorders
2026 ICD-10-CM