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    v1.0.28
    OpenPayerBilling CodesMycosesICD-10-CM b35-dermatophytosis
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    ICD-10-CM Code For Dermatophytosis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group B35 includes superficial fungal infections caused by dermatophytes, such as tinea pedis, tinea corporis, tinea capitis, and onychomycosis, affecting skin, hair, and nails. These ICD-10-CM diagnosis codes are used to document clinical presentations of dermatophyte infection, capturing the affected site, extent, and presence of complications or chronicity. Accurate coding within the ICD-10-CM B35 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM B35: Dermatophytosis Overview

    The ICD-10-CM B35 group covers dermatophytosis, a set of superficial fungal infections that affect skin, hair, and nails. These diagnoses target cutaneous mycotic infections caused by dermatophyte species and involve common sites such as the feet, body, scalp, and nails. Accurate coding supports clear clinical documentation and helps ensure appropriate claim processing and reimbursement.

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    When to Use

    Assign a code from this group when a patient is diagnosed with a dermatophyte infection and the clinician documents the specific site and clinical details. Use these codes to reflect extent, chronicity, or complications when documented, to support accurate medical records and claims.

    ICD-10-CM Codes

    9 rows

    ICD-10-CM CodeDescription
    B35.0Tinea barbae and tinea capitis
    B35.1Tinea unguium
    B35.2Tinea manuum
    B35.3Tinea pedis
    B35.4Tinea corporis
    B35.5Tinea imbricata
    B35.6Tinea cruris
    B35.8Other dermatophytoses
    B35.9Dermatophytosis, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    606Minor Skin Disorders with MCC
    607Minor Skin Disorders without MCC

    Typical Clinical Scenarios

    • An adult patient presents to urgent care with a new, pruritic, well-demarcated, erythematous, annular rash on the trunk and proximal limbs after recent contact with a person who had a similar lesion; KOH prep from skin scrapings confirms fungal hyphae consistent with tinea corporis, so a dermatophytosis code is assigned. Typical codes: B35.4
    • A middle-aged patient has chronic, recurrent interdigital scaling, fissuring, and maceration of the web spaces between toes for several months despite intermittent over-the-counter treatment; physical exam and history indicate tinea pedis as an ongoing condition, warranting a dermatophytosis code for tinea pedis. Typical codes: B35.3
    • An elderly diabetic patient presents with thickened, discolored, brittle toenails progressing over years, causing pain and difficulty with ambulation; fungal infection of the nail is suspected and confirmed by nail clipping microscopy/culture, so a dermatophytosis code for tinea unguium is used as a comorbid condition complicating mobility and diabetes management. Typical codes: B35.1, B35.9

    Related Codes

    B36-OTHER-SUPERFICIAL-MYCOSES

    ICD-10-CM Code For Other Superficial Mycoses: Group Overview

    B37-CANDIDIASIS

    ICD-10-CM Code For Candidiasis: Group Overview

    B38-COCCIDIOIDOMYCOSIS

    ICD-10-CM Code For Coccidioidomycosis: Group Overview

    B39-HISTOPLASMOSIS

    ICD-10-CM Code For Histoplasmosis: Group Overview

    B41-PARACOCCIDIOIDOMYCOSIS

    ICD-10-CM Code For Paracoccidioidomycosis: Group Overview

    B42-SPOROTRICHOSIS-INFECTION

    ICD-10-CM Code For Sporotrichosis: Group Overview

    B43-CHROMOMYCOSIS-AND-PHEOMYCOTIC-ABSCESS

    ICD-10-CM Code For Chromomycosis And Pheomycotic Abscess: Group Overview

    B44-ASPERGILLOSIS

    ICD-10-CM Code For Aspergillosis: Group Overview

    B45-CRYPTOCOCCOSIS

    ICD-10-CM Code For Cryptococcosis: Group Overview

    B46-ZYGOMYCOSIS

    ICD-10-CM Code For Zygomycosis: Group Overview

    Showing 1–10 of 13

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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