S60.421S Blister (nonthermal) of left index finger, sequela

Name of the Condition

• Common Name: Blister (nonthermal) of left index finger, sequela
• Medical Term: Nonthermal blister of left index finger, sequela

Summary

A nonthermal blister of the left index finger, sequela, refers to a residual or chronic condition resulting from a previous nonthermal blister injury. It is classified under the ICD code S60.421S, indicating it is a sequela (late effect) of a superficial injury to the left index finger.

Causes

Nonthermal blisters of the left index finger, sequela, arise from prior friction, pressure, or minor trauma to the area. Common triggers include repetitive manual tasks, tight-fitting gloves, or contact with rough surfaces. The sequela may develop if the initial blister heals improperly or leads to long-term skin changes.

Risk Factors

• Repetitive hand movements or manual labor
• Poorly fitting gloves or accessories
• Exposure to abrasive materials or chemicals
• History of prior skin injuries to the left index finger

Symptoms

• Persistent fluid-filled or scarred area on the skin
• Tenderness or pain in the affected region
• Redness or mild swelling around the sequela
• Possible thickening or discoloration of the skin

Diagnosis

Diagnosis is typically made through physical examination of the left index finger. Healthcare providers assess the sequela’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.
• Topical treatments: Applying moisturizers or silicone gel to promote healing.
• Pain management: Using over-the-counter analgesics if discomfort persists.
• Referral: Consulting a specialist for severe or persistent cases.

Prognosis and Follow-Up

Most nonthermal blisters of the left index finger, sequela, resolve with proper care, though some may leave permanent skin changes. Follow-up is recommended if symptoms worsen or do not improve within a few weeks.

Complications

• Chronic pain or discomfort
• Skin discoloration or scarring
• Increased risk of future blisters in the same area
• Infection if the sequela is not properly cared for

Lifestyle & Prevention

• Wear well-fitting gloves during manual tasks.
• Avoid prolonged exposure to friction or pressure.
• Keep the skin moisturized to maintain elasticity.
• Protect the left index finger from abrasive materials.

When to Seek Professional Help

Seek medical attention if the sequela shows signs of infection (e.g., pus, increased redness), causes severe pain, or does not improve with home care.

Tips for Medical Coders

Document the sequela status clearly, as the code S60.421S requires specification of the left index finger and the sequela nature. Ensure the medical record supports the chronic or residual nature of the condition to justify the code.