L02.42 Furuncle of limb

Name of the Condition

• Furuncle of Limb (ICD-10 L02.42)

Summary

A furuncle of the limb is a localized skin infection that results in a pus-filled pocket, typically caused by bacterial infection. It often presents with pain, swelling, and redness in the affected area and may require medical intervention to resolve.

Causes

Bacterial infection, most commonly Staphylococcus aureus. Blocked hair follicles or sweat glands. Skin breaks or injuries that allow bacteria to enter.

Risk Factors

• Poor hygiene practices.
• Compromised immune system.
• Diabetes or chronic health conditions.
• Use of antibiotics or steroids that disrupt skin flora.
• History of skin infections.

Symptoms

• Pain and tenderness in the affected limb.
• Swelling and redness of the skin.
• Warmth around the infected area.
• Appearance of a lump or boil that may drain pus.

Diagnosis

Physical examination of the affected limb. Bacterial cultures from pus to identify the organism. Ultrasound may be used to assess the abscess extent.

Treatment Options

• Incision and drainage: Primary treatment to remove pus and relieve pain.
• Antibiotics: Prescribed to treat or prevent further infection.
• Warm compresses: Help reduce swelling and promote drainage.

Prognosis and Follow-Up

Generally favorable if treated promptly. Follow-up may be needed to ensure complete healing and monitor for recurrence.

Complications

• Spread of infection to deeper tissues or bloodstream.
• Formation of a carbuncle (cluster of furuncles).
• Scarring or skin discoloration after healing.

Lifestyle & Prevention

• Maintain good hygiene, especially after skin injuries.
• Avoid sharing personal items like towels or razors.
• Keep skin clean and dry, particularly in areas prone to friction.
• Promptly treat minor skin wounds to prevent infection.

When to Seek Professional Help

Seek medical attention if the furuncle is large, painful, or does not improve with home care, or if symptoms worsen (e.g., fever, increasing redness, or pus drainage).

Tips for Medical Coders

Document the location (limb) and clinical details (e.g., presence of pus, drainage) to support code assignment. Ensure documentation aligns with the specific anatomical site and severity of the furuncle.