M65.13 Other infective (teno)synovitis, wrist

Name of the Condition

• Other infective (teno)synovitis, wrist
• ICD-10 Code: M65.13

Summary

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

• Recent wrist injuries (e.g., lacerations, fractures)
• Immunocompromised states (e.g., diabetes, HIV)
• Poor wound hygiene or delayed treatment of minor injuries
• Occupational or recreational exposure to pathogens (e.g., animal bites, contaminated environments)
• Prior wrist surgery or invasive procedures

Symptoms

• Localized swelling, warmth, and tenderness over the affected tendon or joint
• Pain with movement or pressure
• Reduced range of motion or stiffness
• Systemic signs (e.g., fever, chills) if infection is severe or widespread
• Possible drainage or pus if the infection is advanced

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.
• Immobilization (e.g., splinting) may reduce pain and prevent further damage.
• Physical therapy can aid recovery of strength and mobility after infection resolution.

Prognosis and Follow-Up

Prognosis depends on early treatment and the severity of infection. Most cases resolve with appropriate therapy, but delayed care may lead to chronic pain or functional impairment. Follow-up includes monitoring for recurrence or complications, with imaging or lab tests if symptoms persist.

Complications

• Chronic tenosynovitis or joint damage
• Tendon rupture or loss of function
• Spread of infection to surrounding tissues or bloodstream (sepsis)
• Persistent pain or stiffness

Lifestyle & Prevention

• Clean and promptly treat wrist injuries to reduce infection risk.
• Maintain good hand hygiene, especially after exposure to pathogens.
• Manage underlying conditions (e.g., diabetes) to support immune function.
• Avoid repetitive wrist motions that may cause microtrauma if prone to injury.

When to Seek Professional Help

Seek care if wrist pain, swelling, or redness worsens, or if systemic symptoms (fever, chills) develop. Prompt evaluation is critical to prevent complications.

Tips for Medical Coders

Document the anatomical site (wrist) and confirm infective etiology. Include details on infection source (e.g., trauma, surgery) or pathogen type if available, as these may impact coding specificity. Ensure clinical correlation with symptoms and diagnostic findings.