2026 ICD-10-CM Diagnosis Code B37Candidiasis

ICD-10-CM CodesA00–B99B35-B49B37

ICD-10-CM B37
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B37 is a non-billable ICD-10-CM category code for candidiasis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as B37.0, B37.1, B37.2, and B37.31.

Code Identity

ICD-10-CM Code
B37
Billable Status
No — Non-Billable Category
Code Describes
Candidiasis
Chapter
B35-B49
Mycoses

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB35-B49Mycoses
CategoryB37Candidiasis
This CodeB37Candidiasis

Specific Coding for CandidiasisOverview

Non-specific codes like B37 require more characters. Use one of these billable codes instead:

  • Use B37.0 for Candidal stomatitis

  • Use B37.1 for Pulmonary candidiasis

  • Use B37.2 for Candidiasis of skin and nail

  • B37.3 for Candidiasis of vulva and vagina

  • Use B37.31 for Acute candidiasis of vulva and vagina

  • Use B37.32 for Chronic candidiasis of vulva and vagina

  • B37.4 for Candidiasis of other urogenital sites

  • Use B37.41 for Candidal cystitis and urethritis

  • Use B37.42 for Candidal balanitis

  • Use B37.49 for Other urogenital candidiasis

  • Use B37.5 for Candidal meningitis

  • Use B37.6 for Candidal endocarditis

  • Use B37.7 for Candidal sepsis

  • B37.8 for Candidiasis of other sites

  • Use B37.81 for Candidal esophagitis

  • Use B37.82 for Candidal enteritis

  • Use B37.83 for Candidal cheilitis

  • Use B37.84 for Candidal otitis externa

  • Use B37.89 for Other sites of candidiasis

  • Use B37.9 for Candidiasis, unspecified

Tabular List NotesGuidance

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

Includes

  • candidosis
  • moniliasis

Type 1 Excludes

  • neonatal candidiasis P37.5

Clinical InformationClinical

  • Candidiasis

    infection with a fungus of the genus candida. it is usually a superficial infection of the moist areas of the body and is generally caused by candida albicans. (dorland, 27th ed)
  • Candidiasis, Chronic Mucocutaneous

    a clinical syndrome characterized by development, usually in infancy or childhood, of a chronic, often widespread candidiasis of skin, nails, and mucous membranes. it may be secondary to one of the immunodeficiency syndromes, inherited as an autosomal recessive trait, or associated with defects in cell-mediated immunity, endocrine disorders, dental stomatitis, or malignancy.
  • Candidiasis, Cutaneous

    candidiasis of the skin manifested as eczema-like lesions of the interdigital spaces, perleche, or chronic paronychia. (dorland, 27th ed)
  • Candidiasis, Invasive

    an important nosocomial fungal infection with species of the genus candida, most frequently candida albicans. invasive candidiasis occurs when candidiasis goes beyond a superficial infection and manifests as candidemia, deep tissue infection, or disseminated disease with deep organ involvement.
  • Candidiasis, Oral

    infection of the mucous membranes of the mouth by a fungus of the genus candida. (dorland, 27th ed)
  • Candidiasis, Vulvovaginal

    infection of the vulva and vagina with a fungus of the genus candida.
  • Candida

    a genus of yeast-like mitosporic saccharomycetales fungi characterized by producing yeast cells, mycelia, pseudomycelia, and blastophores. it is commonly part of the normal flora of the skin, mouth, intestinal tract, and vagina, but can cause a variety of infections, including candidiasis; onychomycosis; vulvovaginal candidiasis; and candidiasis, oral (thrush).

Patient EducationClinical

Yeast Infections

Candida is the scientific name for yeast. It is a fungus that lives almost everywhere, including in your body. Usually, your immune system keeps yeast under control. If you are sick or taking antibiotics, it can multiply and cause an infection.

Read the full article at MedlinePlus

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

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 B37Overview

Is B37 (Candidiasis) a billable code?

No. This is a category header that groups the codes for candidiasis, and headers cannot be submitted on claims. Claims for candidiasis need a more specific code from this category, such as B37.0, B37.1, and B37.2.