Left Knee Pain ICD-10-CM Codes

Learn about the Left Knee Pain ICD-10-CM codes you can use through this guide for easy billing and effective patient management.

By Matt Olivares on Aug 8, 2025.

Fact Checked by Karina Jimenea.

Use Code

What ICD-10 codes are used for left knee pain?

Left knee pain can result from various conditions, each represented by different left knee pain ICD codes.

M25.562 - Pain in left knee: This is the most direct code for left knee pain.
M23.52 - Chronic instability of knee, left knee: This code can be used if the pain is associated with instability.
M17.12 - Unilateral primary osteoarthritis, left knee: When the pain is due to osteoarthritis.
M17.32 - Unilateral post-traumatic osteoarthritis, left knee: This code is used when pain results from post-traumatic osteoarthritis.
M76.52 - Patellar tendinitis, left knee: When left knee pain is due to patellar tendinitis.
S83.207A - Unspecified tear of unspecified meniscus, current injury, left knee, initial encounter: Used when the knee pain is related to meniscus issues. Use S83.207D for subsequent encounters, and S83.207S for sequela.

These can't be used for unspecified knee or right knee pain cases. These can't be used for bilateral knee pain either.

Which left knee pain ICD codes are billable?

All of the aforementioned ICD-10 codes for documenting left knee pain are valid and billable.

Clinical information

Left knee pain can result from several underlying medical conditions or injuries.

Pain can arise from soft tissues like ligaments, tendons, or muscles surrounding the knee joint.
Conditions like osteoarthritis, patellar tendinitis, and meniscus derangement are common culprits.
Trauma or overuse can also lead to left knee pain.
The pain may be acute (short-term) or chronic (long-term), ranging from mild to severe.
Accurate diagnosis typically involves physical examination, patient history, and imaging tests such as X-rays or MRIs.
Treatments can range from rest to engaging in exercises introduced by physical therapists, to surgery. It all depends on the patient's condition.

Synonyms include

Left patellar pain
Pain in the left patella
Left knee joint pain
Pain in the left knee joint
Discomfort in the left knee
Left knee swelling
Intermittent pain localized in left knee

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Commonly asked questions

Common causes include joint disorders, osteoarthritis, injuries to ligaments or tendons, meniscus tears, and overuse from repetitive motion or strain.

Treatment depends on the cause and may include rest, physical therapy, pain relievers, anti-inflammatory medications, and in some severe cases, surgery. It depends on the findings of healthcare providers.

Yes, regular exercise to strengthen the muscles supporting the knee, maintaining a healthy weight to lessen joint stress, and avoiding risky activities can help prevent knee pain.

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