S83.222A Peripheral tear of medial meniscus, current injury, left knee, initial encounter

ICD10CM code

#### Name of the Condition
- Peripheral tear of medial meniscus, left knee, initial encounter  
- **ICD Code:** S83.222A

#### Summary
A peripheral tear of the medial meniscus refers to a type of knee injury where the inner cartilage of the knee is torn. This injury affects the left knee and is often seen in athletes or individuals engaging in activities that place stress on the knee joint.

#### Causes
- Sudden twisting or turning movements, especially during sports
- Direct impact or trauma to the knee
- Degenerative changes in the knee joint

#### Risk Factors
- Participation in high-impact sports or activities
- Previous knee injuries
- Age-related degeneration of knee cartilage
- Poor conditioning or inadequate muscle support around the knee

#### Symptoms
- Pain and swelling in the knee
- Difficulty bending or straightening the knee
- Feeling of the knee locking or catching
- Instability or weakness in the knee joint

#### Diagnosis
- Physical examination by a healthcare provider
- Imaging tests such as MRI or X-rays to assess the extent of the tear
- Arthroscopy may be considered for a more detailed examination

#### Treatment Options
- Rest, ice, compression, and elevation (R.I.C.E) to manage initial symptoms
- Non-steroidal anti-inflammatory drugs (NSAIDs) for pain relief
- Physical therapy to strengthen the knee and improve flexibility
- In some cases, arthroscopic surgery may be required to repair the tear

#### Prognosis and Follow-Up
- With proper treatment, many individuals recover well, especially if the tear is addressed promptly.
- Regular follow-ups are crucial to monitor healing and prevent further injury.
- Rehabilitation exercises are important for regaining full knee function.

#### Complications
- Chronic pain or persistent instability
- Increased risk of developing osteoarthritis in the affected knee
- Reduced activity levels or difficulty partaking in sports

#### Lifestyle & Prevention
- Maintaining a healthy weight to reduce knee strain
- Regular exercise to strengthen muscles supporting the knee
- Wearing appropriate footwear and using protective gear during sports
- Learning proper techniques for activities that stress the knee

#### When to Seek Professional Help
- Persistent knee pain or swelling
- Difficulty moving the knee or bearing weight
- Signs of infection such as redness, warmth, or fever following a knee injury

#### Additional Resources
- American Academy of Orthopaedic Surgeons (AAOS)  
  Website: [aaos.org](https://www.aaos.org)
- Mayo Clinic  
  Website: [mayoclinic.org](https://www.mayoclinic.org)

#### Tips for Medical Coders
- Verify laterality; ensure coding specifies which knee is injured (left in this case).
- Confirm the encounter type; this code specifies an initial encounter.
- Double-check to avoid confusion with tears located in other parts of the meniscus or affecting the other knee.

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