Candidiasis (B37) ICD-10-CM
The B37 code range covers candidiasis with 21 ICD-10-CM diagnosis codes. 17 of them are billable and valid for claim submission in fiscal year 2026, 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.
- candidosis
- moniliasis
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- neonatal candidiasis P37.5
Codes in the B37 Range 21 codes · 17 billable
- B37 CandidiasisNon-billable
- B37.0 Candidal stomatitis
- B37.1 Pulmonary candidiasis
- B37.2 Candidiasis of skin and nail
- B37.3 Candidiasis of vulva and vaginaNon-billable
- B37.31 Acute candidiasis of vulva and vagina
- B37.32 Chronic candidiasis of vulva and vagina
- B37.4 Candidiasis of other urogenital sitesNon-billable
- B37.41 Candidal cystitis and urethritis
- B37.42 Candidal balanitis
- B37.49 Other urogenital candidiasis
- B37.5 Candidal meningitis
- B37.6 Candidal endocarditis
- B37.7 Candidal sepsis
- B37.8 Candidiasis of other sitesNon-billable
- B37.81 Candidal esophagitis
- B37.82 Candidal enteritis
- B37.83 Candidal cheilitis
- B37.84 Candidal otitis externa
- B37.89 Other sites of candidiasis
- B37.9 Candidiasis, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B37 range.
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).
Candidemia
A form of invasive candidiasis where species of CANDIDA are present in the blood.
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.
Diaper Rash
A type of irritant dermatitis localized to the area in contact with a diaper and occurring most often as a reaction to prolonged contact with urine, feces, or retained soap or detergent.
Fungemia
The presence of fungi circulating in the blood. Opportunistic fungal sepsis is seen most often in immunosuppressed patients with severe neutropenia or in postoperative patients with intravenous catheters and usually follows prolonged antibiotic therapy.
Intertrigo
A superficial dermatitis occurring on skin surfaces in contact with each other, such as the axillae, neck creases, intergluteal fold, between the toes, etc. Obesity is a predisposing factor. The condition is caused by moisture and friction and is characterized by erythema, maceration, burning, and exudation.
About the B37 Code Range
ICD-10 code section B37 covers candidiasis, a group of fungal infections caused by Candida species affecting various body sites. These codes precisely categorize infections ranging from oral thrush (B37.0) to invasive and systemic infections like candidal sepsis (B37.7) and meningitis (B37.5).
This section includes specific codes for common conditions: B37.0 identifies candidal stomatitis, often known as oral thrush or erythema of the mouth's mucous membranes. B37.3 covers vulvovaginal candidiasis, including acute (B37.31) and chronic forms (B37.32), which are frequently encountered in female genital fungal infections. Skin and nail infections such as candidal paronychia fall under B37.2. Pulmonary involvement is classified under B37.1, while urinary tract infections like candidal cystitis and balanitis are found in B37.41 and B37.42, respectively. More severe and disseminated infections, like candidal endocarditis (B37.6) or systemic candidiasis (B37.7), denote invasive disease. The ICD-10 code for candidiasis thus helps clinicians and coders accurately document the infection’s location and severity, assisting in targeted treatment and tracking of fungal infections.
Questions About This Page
How many billable codes are in the B37 range?
Of the 21 codes in this range, 17 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the B37 range classify?
The range classifies candidiasis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
