S83.279 Complex tear of lateral meniscus, current injury, unspecified knee

Name of the Condition

• Complex tear of lateral meniscus, current injury, unspecified knee (ICD-10 Code: S83.279)

Summary

A complex tear of the lateral meniscus refers to significant, multifragmented damage to the C-shaped cartilage on the outer side of the knee joint, classified as a current injury indicating recent onset or active symptoms. This type of tear often involves multiple tear patterns or displaced fragments, potentially affecting joint stability and function.

Causes

Acute trauma, such as twisting or pivoting motions during physical activity. Degenerative wear and tear over time, particularly in older adults. Direct impact or force to the lateral aspect of the knee joint.

Risk Factors

• Participation in sports involving sudden stops, turns, or pivots (e.g., basketball, soccer).
• Advanced age, leading to natural cartilage deterioration.
• Previous knee injuries that may weaken the joint.
• Obesity, which increases stress on the knee.

Symptoms

• Knee pain, often localized to the lateral side.
• Swelling or stiffness in the joint.
• Difficulty bearing weight or moving the knee.
• A sensation of the knee locking or catching.
• Reduced range of motion or instability.

Diagnosis

Physical examination to assess range of motion, stability, and tenderness. Imaging studies, such as MRI, to visualize the meniscus and confirm the tear. Clinical history to determine the onset and mechanism of injury.

Treatment Options

Conservative management, including rest, ice, compression, and elevation (RICE). Physical therapy to improve strength and mobility. Medications for pain and inflammation, such as NSAIDs. Surgical intervention, such as arthroscopy, for severe or displaced tears.

Prognosis and Follow-Up

Recovery depends on the tear severity and treatment approach. Most patients improve with conservative care, but surgery may be needed for complex cases. Follow-up appointments monitor healing and functional recovery.

Complications

Persistent pain or instability. Increased risk of osteoarthritis over time. Limited mobility or reduced quality of life if untreated.

Lifestyle & Prevention

Engage in regular low-impact exercise to strengthen knee muscles. Use proper techniques during sports or physical activities. Maintain a healthy weight to reduce joint stress. Wear supportive footwear.

When to Seek Professional Help

Severe or worsening knee pain. Inability to bear weight or move the knee. Sudden swelling or locking of the joint. Symptoms that do not improve with rest or home care.

Tips for Medical Coders

Document the laterality (right/left/unspecified) and whether the injury is acute or chronic. Specify if the tear is complex, involving multiple fragments or patterns. Ensure clinical documentation supports the diagnosis and treatment provided.