B37.41 Candidal cystitis and urethritis

ICD-10-CM Diagnosis Code B37.41: Candidal Cystitis and Urethritis

ICD-10-CM code B37.41 represents the diagnosis of candidal cystitis and urethritis, classified under candidiasis of other urogenital sites. The concept is an active disease or syndrome. This reference synthesizes official terminology records and clinical overviews to explain the code's structure, related diagnoses, and anatomical context without guaranteeing payer coverage. 1 6

Plain-language overview

Code B37.41 identifies a specific disease or syndrome labeled candidal cystitis and urethritis, providing a standardized diagnostic category for this particular health condition. 1

Clinical context indicates that cystitis involves the bladder and urethritis involves inflammation of the urethra, which can include symptoms like pain during urination and fever. 2

What this code represents

The diagnosis B37.41 is an active concept within the ICD-10-CM terminology, explicitly representing the condition of candidal cystitis and urethritis. 1

This diagnostic concept belongs to the broader parent category of B37.4, which encompasses candidiasis of other urogenital sites, and exists as a narrower concept within that group. 1 6

Coding details

The code B37.41 falls within the B35-B49 mycoses range and the B37 candidiasis category, distinguishing it from related codes like B37.42 for candidal balanitis and B37.49 for other urogenital candidiasis. 6

The terminology surrounding B37.41 includes related diagnostic codes such as B37.42 for candidal balanitis, B37.49 for other urogenital candidiasis, and B37.89 for candidiasis of other sites. 3 5

Documentation considerations

Accurate clinical documentation for B37.41 involves identifying the diagnosis of candidal cystitis and urethritis, which is distinct from other listed urogenital candidiasis conditions like candidal balanitis. 3 6

What the sources add

While terminology records define the code's hierarchical structure, clinical overviews explain that ascending infections can travel from the urethra to the bladder, providing operational context for these anatomical sites. 1 2

Coverage and utilization context

The code B37.41 appears in a Medicare billing and coding article concerning molecular syndromic panels for infectious disease pathogen identification, indicating its use in specific laboratory testing contexts. 3

Sources

1. ICD-10-CM B37.41 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Clinical Overview of Urinary Tract Infections — cdc.gov; accessed 2026-07-27.
3. Article - Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (A58720) — cms.gov; accessed 2026-07-27.
4. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
5. ICD 10 NCD Manual — prismahealth.org; accessed 2026-07-27.
6. B37.41 - Candidal cystitis and urethritis | ICD-10-CM — unboundmedicine.com; accessed 2026-07-27.