S60.421 Blister (nonthermal) of left index finger

Name of the Condition

• Common Name: Blister on the left index finger
• Medical Term: Nonthermal blister of left index finger

Summary

A nonthermal blister of the left index finger is a fluid-filled pocket on the skin resulting from friction, pressure, or minor trauma. It is classified under the ICD code S60.421, indicating it is a specific superficial injury to the left index finger.

Causes

Nonthermal blisters on the left index finger are typically caused by repetitive friction or pressure. Common triggers include manual tasks, tight-fitting gloves, or contact with rough surfaces. They may also result from skin reactions to irritants or minor trauma.

Risk Factors

• Repetitive hand movements or manual labor
• Poorly fitting gloves or accessories
• Exposure to abrasive materials or chemicals
• Participation in activities with frequent hand use

Symptoms

• Fluid-filled bump on the skin
• Tenderness or pain around the blister
• Redness or mild swelling in the affected area

Diagnosis

Diagnosis is typically made through physical examination of the left index finger. Healthcare providers assess the blister’s appearance, size, and surrounding tissue. Imaging is rarely needed unless deeper tissue damage or infection is suspected.

Treatment Options

• Protection: Covering with a sterile bandage to prevent further irritation.
• Drainage under medical advice if painful or persistent.
• Topical antiseptic creams to prevent infection.

Prognosis and Follow-Up

Most nonthermal blisters heal within a few days with proper care. Follow-up may be recommended if symptoms worsen, signs of infection develop, or the blister does not improve. Avoid popping blisters to reduce infection risk.

Complications

• Infection if the blister ruptures and is not properly cared for.
• Delayed healing due to repeated friction or pressure.
• Scarring in rare cases, especially if the blister is deep or becomes infected.

Lifestyle & Prevention

• Wear well-fitting gloves during manual tasks or sports.
• Use protective gear to reduce friction on the left index finger.
• Keep the area clean and dry to prevent irritation.
• Avoid harsh chemicals or abrasive materials that may trigger blisters.

When to Seek Professional Help

Seek medical attention if the blister shows signs of infection (e.g., pus, increased redness, fever), is extremely painful, or does not improve after a few days. Consult a provider if you have underlying conditions like diabetes that may affect healing.

Tips for Medical Coders

Document the specific location (left index finger) and confirm the blister is nonthermal. Include details about the encounter type (e.g., initial, subsequent) if applicable. Ensure the code S60.421 is used for the left index finger; do not use this code for other fingers or thermal causes.