B35.1
Tinea unguium
Clinical Classification Guidelines
Inclusion Terms
- Dermatophytic onychia
- Dermatophytosis of nail
- Onychomycosis
- Ringworm of nails
Medical Intelligence & Overview
Tinea unguium, also known as onychomycosis, is a common fungal infection that affects the nails, particularly the toenails and fingernails. It is characterized by changes in nail color, texture, and shape due to the invasion of dermatophyte fungi. This condition can lead to thickened, brittle, discolored, and deformed nails, impacting both appearance and function. Tinea unguium is part of a group of nail infections collectively called dermatophytic onychia or ringworm of nails. Understanding its causes, symptoms, and treatment options can help individuals manage or prevent this persistent fungal condition.
Causes & Symptoms
Clinical Causes: Infection by dermatophyte fungi, primarily species such as Trichophyton rubrum and Trichophyton mentagrophytes Spread from surrounding skin infections, such as athlete's foot Sharing contaminated nail clippers, files, or footwear Walking barefoot in communal areas like gyms, swimming pools, or locker rooms Prolonged exposure to moist environments or excessive sweating Pre-existing nail injuries or conditions that compromise nail integrity Underlying health conditions like diabetes or immunosuppressive disorders that weaken immune defenses
Key Symptoms: Discoloration of the nail, often yellow, brown, or white Thickening of the affected nail Nail brittleness, crumbling, or breaking easily Distorted nail shape or deformation Debris or keratin buildup under the nail Foul odor in some cases Possible pain or discomfort, especially if the infection progresses Separation of the nail from the nail bed in severe cases
Diagnostic & Treatment
Diagnosis Path: Diagnosis typically involves a visual examination of the affected nails by a healthcare provider. To confirm the presence of a fungal infection, healthcare professionals may recommend laboratory tests such as:
Treatment Protocols: Managing tinea unguium involves various approaches aimed at eradicating the fungal infection and restoring nail health. Treatment strategies include:
Clinical Advice & FAQs
Billing Guidance
Is B35.1 a billable ICD-10 code?
Yes, B35.1 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report B35.1?
Clinical documentation must specify the nature of Tinea unguium and any associated comorbidities for accurate reporting.
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