2027 ICD-10-CM Diagnosis Code B37.41Candidal cystitis and urethritis
ICD-10-CM Codes›A00–B99›B35-B49›B37
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
B37.41 is a billable ICD-10-CM diagnosis code for candidal cystitis and urethritis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 727 through 728, 742 through 743, 757 through 759. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 17 closely related codes. Coders also document this condition as Candida ureteritis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Fungal infections and Urinary tract infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Candida ureteritis
- Candidal urethritis
- Infective ureteritis
- Monilial cystitis
- Renal tract candidiasis
- Ureteritis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to B37.41: its own notes plus those printed at B37, block B35-B49, and Chapter 1. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- candidosis
- moniliasis
- diseases generally recognized as communicable or transmissible
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify resistance to antimicrobial drugs (Z16.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name B37.41, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming B37.41: they are not reported together with it, unless the two conditions are unrelated.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
cystitis B37.41
urethritis B37.41
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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)
Patient EducationClinical
Urinary Tract Infections
The urinary system is the body's drainage system for removing wastes and extra water. It includes two kidneys, two ureters, a bladder, and a urethra. Urinary tract infections (UTIs) are the second most common type of infection in the body.
Read the full article at MedlinePlus
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Convert B37.41 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B37.41Overview
What is the ICD-10 code for candidal cystitis and urethritis?
The ICD-10-CM code for candidal cystitis and urethritis is B37.41 (sometimes written as B3741). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is B37.41 (Candidiasis of other urogenital sites) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report candidal cystitis and urethritis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does B37.41 group to?
When candidal cystitis and urethritis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 759, 727, 743, 728, 758, 757, with relative weights from 0.7687 to 1.8448 depending on complications. Higher weights mean higher Medicare reimbursement.
Is B37.41 a CC or MCC?
CMS lists B37.41 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 17 closely related codes in its exclusion list.
Can B37.41 be reported with P37.5?
Not as a rule. The Excludes1 note at B37, which applies to B37.41, lists "neonatal candidiasis (P37.5)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
