M00.262 Other streptococcal arthritis, left knee

Name of the Condition

• Other streptococcal arthritis, left knee

Summary

Other streptococcal arthritis, left knee, is a bacterial infection of the left knee joint caused by streptococcal bacteria other than Streptococcus pneumoniae. It results in joint inflammation and can lead to rapid joint damage if not treated promptly. This condition requires immediate medical attention to prevent complications.

Causes

Other streptococcal arthritis, left knee, is caused by infection with streptococcal bacteria (excluding Streptococcus pneumoniae) in the left knee joint space. The infection can spread through the bloodstream from a distant site, such as the skin or respiratory tract, or via direct inoculation into the joint.

Risk Factors

• Immunocompromised states (e.g., diabetes, HIV, chemotherapy).
• Pre-existing joint conditions (e.g., rheumatoid arthritis).
• Recent joint surgery or invasive procedures.
• Skin infections or bacteremia.
• Intravenous drug use.

Symptoms

• Severe left knee joint pain, swelling, and warmth.
• Fever and chills.
• Reduced range of motion in the affected knee.
• Fatigue and malaise.
• Redness over the left knee joint.

Diagnosis

Diagnosis involves joint aspiration to analyze synovial fluid for bacteria, blood cultures to identify systemic infection, and imaging (e.g., X-rays, MRI) to assess joint damage. Clinical evaluation and patient history are also considered.

Treatment Options

• Antibiotic therapy targeting streptococcal bacteria.
• Joint drainage or aspiration to reduce pressure and remove infected fluid.
• Pain management and anti-inflammatory medications.
• Immobilization of the knee to promote healing.
• Surgical intervention if joint damage is severe.

Prognosis and Follow-Up

Prognosis depends on early treatment and the extent of joint damage. Prompt antibiotic therapy and drainage improve outcomes. Follow-up includes monitoring for recurrence, assessing joint function, and addressing any residual damage. Long-term complications may require ongoing management.

Complications

• Permanent joint damage or deformity.
• Septic shock from systemic infection.
• Osteomyelitis (bone infection) spreading from the joint.
• Chronic arthritis or reduced mobility.
• Spread of infection to other joints or organs.

Lifestyle & Prevention

• Maintain good hygiene to reduce infection risk.
• Manage chronic conditions (e.g., diabetes) to support immune function.
• Avoid intravenous drug use and seek treatment for skin infections promptly.
• Follow post-surgical care instructions to prevent joint contamination.
• Stay up-to-date with vaccinations to reduce respiratory infections.

When to Seek Professional Help

Seek immediate medical care if you experience severe left knee pain, swelling, fever, or reduced mobility. Early intervention is critical to prevent permanent joint damage or systemic infection.

Tips for Medical Coders

Document the specific joint (left knee) and confirm the causative organism is streptococcal (excluding Streptococcus pneumoniae). Include clinical details supporting the diagnosis, such as synovial fluid analysis or imaging findings, to justify code assignment. Ensure the code aligns with the documented location and etiology.