2026 ICD-10-CM Diagnosis Code B35.0Tinea barbae and tinea capitis

ICD-10-CM Codes›A00–B99›B35-B49›B35

ICD-10-CM B35.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B35.0 is a billable ICD-10-CM diagnosis code for tinea barbae and tinea capitis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Fungal infections.

Code Identity

ICD-10-CM Code
B35.0
Billable Status
Yes — Valid for Submission
Code Describes
Tinea barbae and tinea capitis
Short Description
Tinea barbae and tinea capitis
Same as the full description in the CMS dataset.
Parent Code
B35
Dermatophytosis

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB35-B49Mycoses
CategoryB35Dermatophytosis
This CodeB35.0Tinea barbae and tinea capitis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Fungal infection of hair
  • Kerion caused by Microsporum
  • Kerion caused by Trichophyton
  • Tinea barbae
  • Tinea barbae caused by Microsporum
  • Tinea barbae caused by Microsporum canis
  • Tinea barbae caused by Nannizzia gypsea
  • Tinea barbae caused by Trichophyton
  • Tinea barbae caused by Trichophyton mentagrophytes
  • Tinea barbae caused by Trichophyton verrucosum
  • Tinea barbae caused by Trichophyton violaceum
  • Tinea capitis
  • Tinea capitis caused by Microsporum
  • Tinea capitis caused by Microsporum audouinii
  • Tinea capitis caused by Microsporum canis variant canis
  • Tinea capitis caused by Microsporum canis variant distortum
  • Tinea capitis caused by Microsporum equinum
  • Tinea capitis caused by Microsporum ferrugineum
  • Tinea capitis caused by Microsporum gallinae
  • Tinea capitis caused by Microsporum nanum
  • Tinea capitis caused by Nannizzia fulva
  • Tinea capitis caused by Nannizzia gypsea
  • Tinea capitis caused by Trichophyton
  • Tinea capitis caused by Trichophyton gourvilii
  • Tinea capitis caused by Trichophyton megninii
  • Tinea capitis caused by Trichophyton mentagrophytes
  • Tinea capitis caused by Trichophyton mentagrophytes variant erinacei
  • Tinea capitis caused by Trichophyton rubrum
  • Tinea capitis caused by Trichophyton soudanense
  • Tinea capitis caused by Trichophyton tonsurans
  • Tinea capitis caused by Trichophyton verrucosum
  • Tinea capitis caused by Trichophyton violaceum
  • Tinea capitis caused by Trichophyton yaoundei
  • Tinea caused by Microsporum audouinii
  • Tinea caused by Microsporum canis variant canis
  • Tinea caused by Microsporum canis variant distortum
  • Tinea caused by Microsporum equinum
  • Tinea caused by Microsporum ferrugineum
  • Tinea caused by Microsporum nanum
  • Tinea caused by Nannizzia fulva
  • Tinea caused by Nannizzia gypsea
  • Tinea caused by Trichophyton megninii
  • Tinea caused by Trichophyton mentagrophytes variant erinacei
  • Tinea caused by Trichophyton rubrum
  • Tinea caused by Trichophyton soudanense
  • Tinea caused by Trichophyton tonsurans
  • Tinea caused by Trichophyton verrucosum
  • Tinea caused by Trichophyton violaceum
  • Tinea caused by Trichophyton yaoundei
  • Tinea favosa
  • Tinea kerion
  • Tinea kerion of beard

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Beard ringworm
  • Kerion
  • Scalp ringworm
  • Sycosis, mycotic

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Dermatophytosis(epidermophyton) (infection) (Microsporum) (tinea) (Trichophyton)
      • beard
    • Dermatophytosis(epidermophyton) (infection) (Microsporum) (tinea) (Trichophyton)
      • capitis
    • Dermatophytosis(epidermophyton) (infection) (Microsporum) (tinea) (Trichophyton)
      • scalp
    • Disease, diseased
      • Gruby's (tinea tonsurans)
    • Gruby's disease
    • Herpes, herpesvirus, herpetic
      • tonsurans
    • Infection, infected, infective(opportunistic)
      • fungus NOS
        • beard
    • Infection, infected, infective(opportunistic)
      • fungus NOS
        • scalp
    • Itch, itching
      • barber's
    • Itch, itching
      • Malabar
        • beard
    • Itch, itching
      • Malabar
        • scalp
    • Kerion(celsi)
    • Parasitic
      • sycosis (beard) (scalp)
    • Ringworm
      • beard
    • Ringworm
      • black dot
    • Ringworm
      • honeycomb
    • Ringworm
      • scalp
    • Sycosis
      • contagiosa (mycotic)
    • Sycosis
      • mycotic
    • Sycosis
      • parasitic
    • Tinea(intersecta) (tarsi)
      • asbestina
    • Tinea(intersecta) (tarsi)
      • barbae
    • Tinea(intersecta) (tarsi)
      • beard
    • Tinea(intersecta) (tarsi)
      • black dot
    • Tinea(intersecta) (tarsi)
      • capitis
    • Tinea(intersecta) (tarsi)
      • kerion
    • Tinea(intersecta) (tarsi)
      • scalp
    • Tinea(intersecta) (tarsi)
      • sycosis
    • Tinea(intersecta) (tarsi)
      • tonsurans

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF004
Fungal infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Tinea Capitis

    ringworm of the scalp and associated hair mainly caused by species of microsporum; trichophyton; and epidermophyton, which may occasionally involve the eyebrows and eyelashes.

  • Tinea Favosa

    a disease of the scalp that may affect the glabrous skin and the nails and is recognized by the concave sulfur-yellow crusts that form around loose, wiry hairs. atrophy ensues, leaving a smooth, glossy, thin, paper-white patch. this type of disease is rare in the united states and more frequently seen in the middle east, africa, southeastern europe, and other countries bordering the mediterranean sea. (arnold, odom, and james, andrew's diseases of the skin, 8th ed, p319)

Patient EducationClinical

Dandruff, Cradle Cap, and Other Scalp Conditions

Your scalp is the skin on the top of your head. Unless you have hair loss, hair grows on your scalp. Different skin problems can affect your scalp.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert B35.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
110.0 Dermatophyt scalp/beard
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B35.0Overview

Is B35.0 (Dermatophytosis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report tinea barbae and tinea capitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B35.0 group to?

When tinea barbae and tinea capitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of B35.0?

Under the General Equivalence Mappings, tinea barbae and tinea capitis converts to ICD-9-CM 110.0 (dermatophyt scalp/beard). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.