Right Knee Medial Meniscus ICD-10-CM Codes

Delve into the specific ICD-10 codes for right knee medial meniscus derangements and injuries. Learn more about clinical insights, related terms, FAQs, and more.

By Katherine Ellison on Aug 8, 2025.

Fact Checked by Ericka Pingol.

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What ICD-10 Codes are Used for Right Knee Medial Meniscus?

Below is a list of the derangements and injuries of right knee medial meniscus ICD-10 codes you can use for medical billing and coding.

M23.003: Cystic meniscus, unspecified medial meniscus, right knee
M23.011: Cystic meniscus, anterior horn or medial meniscus, right knee
M23.021: Cystic meniscus, posterior hor of medial meniscus, right knee
M23.031: Cystic meniscus, other medial meniscus, right knee
M23.203: Derangement of unspecified medial meniscus due to old tear or injury, right knee
M23.211: Derangement of anterior horn of medial meniscus due to old tear or injury, right knee
M23.221: Derangement of posterior horn of medial meniscus due to old tear or injury, right knee
M23.231: Derangement of other medial meniscus due to old tear or injury, right knee
M23.303: Other meniscus derangements, unspecified medial meniscus, right knee
M23.311: Other meniscus derangements, anterior horn of medial meniscus, right knee
M23.321: Other meniscus derangements, posterior horn of medial meniscus, right knee
M23.331: Other meniscus derangements, other medial meniscus, right knee

The following codes are ICD-10 codes that you can use for billing or coding injuries on the right knee medial meniscus. However, more specific codes under them determine if the injury is an initial encounter, subsequent encounter, or sequela. It’s highly recommended that you use more specific codes in your practice.

S83.211: Bucket-handle tear of medial meniscus, current injury, right knee
S83.221: Peripheral tear of medial meniscus, current injury, right knee
S83.231: Complex tear of medial meniscus, current injury, right knee
S83.241: Other tears of medial meniscus, current injury, right knee

Which Right Knee Medial Meniscus ICD codes are Billable?

The M23 ICD-10 codes mentioned above are billable. For the S83 codes mentioned above to be billable, you must find and use the more specific ones under them.

Clinical Information

The medial meniscus is a type of cartilage located in the knee joint that serves as a shock absorber in the medial compartment.
Some derangements in the medial meniscus are injuries and cysts. However, the most common has to be a tear in the medial meniscus.
If a medial meniscus in the right knee or left knee is injured, some common symptoms a patient may feel are pain, swelling/stiffness in the joints, redness, weakness, inability to straighten one’s leg, and the area is warm to the touch.
To diagnose any derangement, a practitioner will have a patient undergo an interview, physical examination, and imaging tests like MRIs or CT scans.
Treatment may vary depending on the derangement. But some common ones are medication (oral or injections), physical therapy, and surgery.

Synonyms Include:

Cystic medial meniscus of right knee
Cystic meniscus of right medial posterior horn
Old bucket handle tear of right medial meniscus
Current right knee bucket handle medial meniscus tear
Current right knee peripheral medial meniscus tear

Commonly asked questions

You may use a right knee medial meniscus ICD code when you’ve determined the cause and affected area via tests. For current injuries of the medial meniscus in the right knee, you may only use it when you’ve determined the type of tear and if the injury is an initial encounter, subsequent encounter, or sequela.

Yes, most of the right knee medial meniscus diagnosis codes are billable. To know which ones those are and how to make the less specific right knee medial meniscus ICD-10 codes more billable, please refer to the “Which right knee medial meniscus codes are billable” section.

Common treatments for injuries or derangements on the right knee medial meniscus are oral medications/injections, physical therapy, and surgery.

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