Dermatophytosis (B35) ICD-10-CM
The B35 code range covers dermatophytosis with 10 ICD-10-CM diagnosis codes. 9 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- favus
- infections due to species of Epidermophyton, Micro-sporum and Trichophyton
- tinea, any type except those in B36
Codes in the B35 Range 10 codes · 9 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B35 range.
Onychomycosis
A fungal infection of the nail, usually caused by DERMATOPHYTES; YEASTS; or nondermatophyte MOLDS.
Tinea
Fungal infection of keratinized tissues such as hair, skin and nails. The main causative fungi include MICROSPORUM; TRICHOPHYTON; and EPIDERMOPHYTON.
Tinea Cruris
Fungal infection of the groin. The main causative fungus is TRICHOPHYTON.
Tinea Pedis
Dermatological pruritic lesion in the feet, caused by Trichophyton rubrum, T. mentagrophytes, or Epidermophyton floccosum.
About the B35 Code Range
Tinea is a fungal infection of hair, skin, or nails. Dermatophytosis belongs to the broader group of fungal infections called mycoses.
The subdivisions mainly separate infections by location: B35.0 names the beard or scalp, B35.1 nails, B35.2 hands, and B35.3 feet. B35.4 names the body, and B35.6 the groin. B35.5 identifies tinea imbricata; B35.8 and B35.9 identify other and unspecified dermatophytoses.
Questions About This Page
How many billable codes are in the B35 range?
Of the 10 codes in this range, 9 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B35 range classify?
The range classifies dermatophytosis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
