B37.2 Candidiasis of skin and nail

Name of the Condition

• Candidiasis of Skin and Nail (ICD Code: B37.2)
• Technical term: Candidiasis of skin and nail
• ICD-10 Code: B37.2

Summary

Candidiasis of skin and nail is a fungal infection caused by Candida species, affecting the skin and nail structures. It results from the overgrowth of Candida, which is normally present in small amounts on the skin. The condition may present as localized skin lesions or nail involvement, such as onychomycosis, and is often associated with moisture, warmth, or compromised skin barriers.

Causes

Candidiasis of skin and nail occurs when Candida fungi overgrow on the skin or under the nail. This overgrowth can be triggered by factors like prolonged moisture, skin maceration, or disruption of the skin's natural flora. Infections may also arise from direct contact with contaminated surfaces or spread from other body sites.

Risk Factors

• Prolonged exposure to moisture (e.g., sweaty environments, occlusive footwear).
• Weakened immune system (e.g., HIV/AIDS, chemotherapy).
• Diabetes mellitus or poor glycemic control.
• Use of antibiotics or corticosteroids.
• Skin trauma or fissures.
• Nail abnormalities (e.g., onycholysis, paronychia).
• Occupational exposure to Candida (e.g., healthcare settings).

Symptoms

• Itching, redness, or scaling on affected skin.
• Thickened, discolored, or brittle nails (onychomycosis).
• Pain or tenderness around the nail bed.
• Cracking or peeling skin, especially between toes or fingers.
• White or yellowish nail discoloration with possible separation from the nail bed.

Diagnosis

Diagnosis involves a physical examination of the skin and nails, focusing on characteristic lesions or nail changes. Laboratory tests, such as potassium hydroxide (KOH) microscopy or fungal cultures, may confirm the presence of Candida. Nail samples may be collected for histopathological analysis if needed.

Treatment Options

Treatment typically includes topical antifungal agents (e.g., creams, ointments) for skin infections. Nail infections may require oral antifungals or topical lacquers, depending on severity. Keeping the affected area clean and dry is essential. Severe or recurrent cases may need prolonged therapy or combination treatments.

Prognosis and Follow-Up

Prognosis is generally good with appropriate treatment, though nail infections may take months to resolve. Follow-up may be necessary to monitor for recurrence or treatment response. Patients with underlying conditions (e.g., diabetes) should manage these to reduce infection risk.

Complications

• Chronic or recurrent infections.
• Secondary bacterial infections due to skin breakdown.
• Nail deformity or permanent damage from severe onychomycosis.
• Spread to other body areas if untreated.

Lifestyle & Prevention

• Keep skin dry, especially in moist areas (e.g., between toes).
• Wear breathable footwear and change socks regularly.
• Avoid sharing personal items (e.g., towels, nail clippers).
• Maintain good nail hygiene and avoid trauma.
• Manage underlying conditions like diabetes.

When to Seek Professional Help

Seek care if symptoms worsen, persist after treatment, or involve widespread skin/nail changes. Consult a healthcare provider for severe pain, fever, or signs of spreading infection.

Tips for Medical Coders

Document the specific site (skin vs. nail) and any contributing factors (e.g., diabetes, immunosuppression) to support code assignment. Ensure clinical correlation with symptoms and diagnostic findings. Note that B37.2 is specific to skin and nail involvement; avoid using this code for other Candida sites.