M71.10 Other infective bursitis, unspecified site

Name of the Condition

• Other infective bursitis, unspecified site

Summary

Other infective bursitis, unspecified site, refers to an infection of a bursa (a small fluid-filled sac that reduces friction between tissues) where the specific site is not documented. This condition involves microbial invasion of the bursa, leading to inflammation, pain, and potential functional impairment. The infection may be bacterial or non-bacterial, and the lack of site specification indicates the affected bursa is not identified in clinical documentation.

Causes

Other infective bursitis, unspecified site, typically results from bacterial infection, often introduced through direct trauma, skin breakdown, or spread from adjacent tissues. Common causative organisms include Staphylococcus aureus. Non-bacterial infections or secondary infection of a pre-existing bursitis may also occur, though the exact etiology varies by case. The unspecified site designation suggests the clinical record does not specify the bursa involved.

Risk Factors

• Recent injury or surgery near a bursa
• Skin infections or open wounds in the vicinity
• Immunocompromised states (e.g., diabetes, HIV)
• Chronic inflammatory conditions (e.g., rheumatoid arthritis)
• Repetitive motion or pressure on the bursa

Symptoms

• Localized pain, swelling, and warmth over the bursa
• Redness or erythema at the site
• Fever or systemic signs of infection
• Limited range of motion in adjacent joints
• Pus drainage if the infection progresses

Diagnosis

Diagnosis involves a physical examination to assess bursal characteristics, including tenderness, warmth, and swelling. Imaging (e.g., ultrasound) may be used to evaluate the bursa, and fluid aspiration with culture can confirm infection. The unspecified site designation indicates the clinical record does not specify the bursa involved, which may limit diagnostic specificity.

Treatment Options

Treatment typically includes antibiotic therapy targeted at the causative organism, determined via culture results. Rest, elevation, and anti-inflammatory medications may reduce symptoms. Severe cases may require surgical drainage. The unspecified site designation does not alter standard treatment approaches but may impact documentation of site-specific interventions.

Prognosis and Follow-Up

Prognosis depends on the severity of infection, timeliness of treatment, and patient factors (e.g., immune status). Most cases resolve with appropriate therapy, but delayed treatment may lead to chronic bursitis or abscess formation. Follow-up includes monitoring for resolution of symptoms and repeat imaging if needed. The unspecified site designation does not affect prognosis but may require broader clinical evaluation.

Complications

• Chronic bursitis or persistent pain
• Abscess formation requiring drainage
• Spread of infection to adjacent tissues
• Functional impairment due to limited mobility
• Systemic infection (sepsis) in severe cases

Lifestyle & Prevention

• Avoid repetitive pressure or trauma to bursae
• Maintain skin integrity to prevent infection entry
• Manage chronic conditions (e.g., diabetes) to reduce infection risk
• Use protective gear during activities with bursa stress
• Seek prompt care for skin wounds near bursae

When to Seek Professional Help

Seek care if symptoms worsen (e.g., increased pain, fever) or persist despite home care. Immediate evaluation is needed for pus drainage, severe swelling, or signs of systemic infection. The unspecified site designation does not change urgency but may require broader clinical assessment.

Tips for Medical Coders

Document the unspecified site designation when the clinical record does not specify the bursa involved. Ensure the code M71.10 is used only when the site is not documented; if the site is known, a more specific code should be assigned. Verify that infective bursitis is confirmed (e.g., via culture or imaging) to support the diagnosis. The unspecified site designation reflects clinical documentation limitations, not a lack of specificity in the condition itself.