M23.0 Cystic meniscus

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Cystic meniscus is M23.0 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
M20-M25: Other joint disorders (M20-M25)
Category M23
148 codes (111 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to M23.0:

  • Derangement › knee (recurrent) › meniscus › cystic

Official Coding Guidelines

Osteoporosis without pathological fracture (M81)

Category M81, Osteoporosis without current pathological fracture, is for use for patients with osteoporosis who do not currently have a pathologic fracture due to the osteoporosis, even if they have had a fracture in the past. For patients with a history of osteoporosis fractures, status code Z87.310, Personal history of (healed) osteoporosis fracture, should follow the code from M81.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.13.d.1
Osteoporosis with current pathological fracture (M80)

Category M80, Osteoporosis with current pathological fracture, is for patients who have a current pathologic fracture at the time of an encounter. The codes under M80 identify the site of the fracture. A code from category M80, not a traumatic fracture code, should be used for any patient with known osteoporosis who suffers a fracture, even if the patient had a minor fall or trauma, if that fall or trauma would not usually break a normal, healthy bone.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.13.d.2

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

M23 Internal derangement of knee

More Specific Codes

M23.00 Cystic meniscus, unspecified meniscus M23.000 Cystic meniscus, unspecified lateral meniscus, right knee M23.001 Cystic meniscus, unspecified lateral meniscus, left knee M23.002 Cystic meniscus, unspecified lateral meniscus, unspecified knee M23.003 Cystic meniscus, unspecified medial meniscus, right knee M23.004 Cystic meniscus, unspecified medial meniscus, left knee M23.005 Cystic meniscus, unspecified medial meniscus, unspecified knee M23.006 Cystic meniscus, unspecified meniscus, right knee M23.007 Cystic meniscus, unspecified meniscus, left knee M23.009 Cystic meniscus, unspecified meniscus, unspecified knee M23.01 Cystic meniscus, anterior horn of medial meniscus M23.011 Cystic meniscus, anterior horn of medial meniscus, right knee M23.012 Cystic meniscus, anterior horn of medial meniscus, left knee M23.019 Cystic meniscus, anterior horn of medial meniscus, unspecified knee M23.02 Cystic meniscus, posterior horn of medial meniscus M23.021 Cystic meniscus, posterior horn of medial meniscus, right knee M23.022 Cystic meniscus, posterior horn of medial meniscus, left knee M23.029 Cystic meniscus, posterior horn of medial meniscus, unspecified knee M23.03 Cystic meniscus, other medial meniscus M23.031 Cystic meniscus, other medial meniscus, right knee M23.032 Cystic meniscus, other medial meniscus, left knee M23.039 Cystic meniscus, other medial meniscus, unspecified knee M23.04 Cystic meniscus, anterior horn of lateral meniscus M23.041 Cystic meniscus, anterior horn of lateral meniscus, right knee M23.042 Cystic meniscus, anterior horn of lateral meniscus, left knee M23.049 Cystic meniscus, anterior horn of lateral meniscus, unspecified knee M23.05 Cystic meniscus, posterior horn of lateral meniscus M23.051 Cystic meniscus, posterior horn of lateral meniscus, right knee M23.052 Cystic meniscus, posterior horn of lateral meniscus, left knee M23.059 Cystic meniscus, posterior horn of lateral meniscus, unspecified knee

Related Codes in M23

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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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