Compliance, Regulatory & Policies -
Policy, Billing, or Coverage Update -
2026
Reimbursement Policy: PO-RE-020 Onychomycosis Testing
Onychomycosis, also known as tinea unguium, is a fungal infection of the nail typically caused by pathogenic fungal dermatophytes, such as Trichophyton rubrum, Trichophyton mentagrophytes, and Epidermophyton floccossum; onychomycosis may also be caused by yeasts, including Candida parapsilosis and Candida guilliermondii, or nondermatophyte molds, including Neoscytalidium dimidiatum, Onychocola canadensis, the Aspergillus species, Scopulariopsis species, Alternaria species, Acremonium species, and Fusarium species.
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