M65.112 Other infective (teno)synovitis, left shoulder

Name of the Condition

• Other infective (teno)synovitis, left shoulder
• ICD-10 Code: M65.112

Summary

This condition involves an infection of the synovial sheath surrounding tendons (tenosynovitis) or the synovial membrane of the left shoulder joint. It typically causes localized inflammation, pain, and functional impairment in the shoulder region.

Causes

The condition is most commonly caused by bacterial infections, though viral or fungal pathogens may also be involved. It can arise from direct inoculation (e.g., trauma, surgery) or hematogenous spread from a distant infection.

Risk Factors

• Factors increasing risk include recent shoulder injuries, immunocompromised states (e.g., diabetes, HIV), poor wound hygiene, and occupations with repetitive shoulder motion or exposure to pathogens.

Symptoms

• Patients may experience swelling, tenderness, warmth, and reduced mobility in the left shoulder. Systemic symptoms like fever or malaise may occur if the infection is severe.

Diagnosis

Diagnosis involves a physical exam to assess inflammation and mobility. Imaging (e.g., MRI, ultrasound) visualizes soft tissue changes, while laboratory tests (e.g., synovial fluid analysis, cultures) identify infectious agents.

Treatment Options

• Antibiotics are the primary treatment for bacterial infections. Surgical drainage or debridement may be necessary for abscesses or severe cases. Rest and immobilization of the shoulder may aid recovery.

Prognosis and Follow-Up

Prognosis depends on early treatment and the severity of infection. Most patients recover with appropriate therapy, but delayed care can lead to chronic joint damage or recurrence. Follow-up includes monitoring for resolution of symptoms and functional recovery.

Complications

• Chronic shoulder stiffness or limited range of motion
• Spread of infection to surrounding tissues or bloodstream (sepsis)
• Tendon rupture or joint destruction if untreated

Lifestyle & Prevention

• Maintain good wound hygiene, especially after shoulder injuries or procedures.
• Avoid repetitive shoulder strain or exposure to contaminated environments.
• Manage underlying conditions like diabetes to reduce infection risk.

When to Seek Professional Help

Seek care if shoulder pain, swelling, or warmth persists or worsens, or if systemic symptoms (e.g., fever, chills) develop. Prompt evaluation is critical to prevent complications.

Tips for Medical Coders

Document the specific site (left shoulder) and confirm infective etiology. Include clinical details (e.g., imaging, cultures) to support the diagnosis. Ensure the code aligns with the anatomical location and infectious nature of the condition.