ICD-10-CM Billable Code

B36.9

Superficial mycosis, unspecified

Clinical Classification Guidelines

Medical Intelligence & Overview

Superficial mycosis is a common skin condition caused by fungal infections affecting the upper layer of the skin, hair, or nails. When the specific type of fungus isn't identified, it is classified under the code B36.9. This condition typically results in visible skin changes and can be uncomfortable, but it is generally treatable with proper care and medication.

Causes & Symptoms

Clinical Causes: Fungal pathogens such as dermatophytes, yeasts (like Candida), or molds Warm, humid environments that promote fungal growth Poor skin hygiene or excessive sweating Shared personal items such as towels, clothing, or athletic equipment Skin injuries or compromised skin barriers Weakened immune system or underlying health conditions

Key Symptoms: Itchy, scaly patches on the skin Redness or inflammation in affected areas Ring-shaped rash (in some cases) Cracking or peeling skin Discoloration or changes in skin texture Possible hair loss if the scalp is involved

Diagnostic & Treatment

Diagnosis Path: Diagnosis typically involves a clinical examination of the affected skin, hair, or nails by a healthcare provider. In certain cases, skin scrapings or samples may be collected for microscopic examination or fungal cultures to identify the specific organism. These tests help distinguish superficial mycosis from other skin conditions with similar appearances.

Treatment Protocols: Management of superficial mycosis generally includes antifungal medications, which can be topical or systemic depending on the severity. Topical antifungal creams, ointments, or powders are often effective for localized infections. More extensive or resistant cases may require oral antifungal drugs. Additionally, maintaining good hygiene, keeping skin dry, and avoiding shared personal items can help prevent recurrence. Your healthcare provider may also recommend lifestyle adjustments to reduce moisture and friction around affected areas.

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is B36.9 a billable ICD-10 code?
Yes, B36.9 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report B36.9?
Clinical documentation must specify the nature of Superficial mycosis, unspecified and any associated comorbidities for accurate reporting.

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