M00.039 Staphylococcal arthritis, unspecified wrist

Name of the Condition

• Staphylococcal arthritis, unspecified wrist

Summary

Staphylococcal arthritis, unspecified wrist, is a bacterial infection affecting the wrist joint, caused by Staphylococcus bacteria. It leads to rapid joint inflammation, pain, and potential damage if not treated promptly. This condition requires immediate medical attention to prevent complications.

Causes

Staphylococcal arthritis, unspecified wrist, is primarily caused by infection with Staphylococcus bacteria, most commonly Staphylococcus aureus. The bacteria can enter the joint space through direct inoculation (e.g., injury or surgery), spread from nearby infections, or via the bloodstream from a distant site.

Risk Factors

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

Symptoms

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

Treatment Options

Treatment typically includes antibiotics to target the infection, often administered intravenously initially, followed by oral therapy. Drainage of the infected joint (e.g., via aspiration or surgery) may be necessary to remove pus and reduce pressure. Pain management and immobilization of the wrist may also be recommended to support healing.

Prognosis and Follow-Up

With prompt and appropriate treatment, most patients recover without long-term joint damage. Follow-up care includes monitoring for resolution of symptoms, repeat imaging if needed, and adjusting antibiotics based on culture results. Delayed treatment increases the risk of joint destruction or chronic arthritis.

Complications

Untreated or inadequately treated infection can lead to joint destruction, septic shock, or spread of infection to other parts of the body. Chronic pain, reduced mobility, or permanent joint damage may occur in severe cases.

Lifestyle & Prevention

Maintain good hand and wrist hygiene, especially after injuries or procedures. Avoid sharing needles or unsterile equipment. Manage underlying conditions (e.g., diabetes) to reduce infection risk. Promptly treat skin infections or wounds near the wrist.

When to Seek Professional Help

Seek immediate medical care if you experience sudden wrist pain, swelling, fever, or reduced mobility, as these may indicate a serious infection requiring urgent treatment.

Tips for Medical Coders

Use this code for staphylococcal arthritis of the wrist when the specific side (right/left) is not documented. Ensure documentation supports the diagnosis, including clinical findings, lab results, or imaging. Verify that the infection is localized to the wrist and not part of a polyarticular process, which would require a different code.