2027 ICD-10-CM Diagnosis Code B37.5Candidal meningitis

ICD-10-CM Codes›A00–B99›B35-B49›B37

ICD-10-CM B37.5
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

B37.5 is a billable ICD-10-CM diagnosis code for candidal meningitis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 23 through 24, 97 through 99, 791, 793, 974 through 976. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 63 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Fungal infections and Meningitis.

Code Identity

ICD-10-CM Code
B37.5
Billable Status
Yes — Valid for Submission
Code Describes
Candidal meningitis
Short Description
Candidal meningitis
Same as the full description in the CMS dataset.
Parent Code
B37
Candidiasis

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB35-B49Mycoses
CategoryB37Candidiasis
This CodeB37.5Candidal meningitis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Candidal meningitis
  • Central nervous system candidiasis
  • Fungal meningitis

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B37.5: 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.

From B37 Candidiasis applies to 17 codes
  • candidosis
  • moniliasis
From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • 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.

From B37 Candidiasis applies to 17 codes
  • neonatal candidiasis (P37.5)

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.

From Block B35-B49 Mycoses applies to 104 codes
  • hypersensitivity pneumonitis due to organic dust (J67.-)
  • mycosis fungoides (C84.0-)
From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • 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.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • 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 B37.5, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming B37.5: they are not reported together with it, unless the two conditions are unrelated.

  • G02 Meningitis in other infectious and parasitic diseases classified elsewhere
    candidal meningitis (B37.5)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

CCSR INF004
Fungal infections
Default principal diagnosis: inpatient No · outpatient No
CCSR NVS001
Meningitis
Default principal diagnosis: inpatient Yes · outpatient Yes

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

Meningitis

Meningitis is inflammation of the thin tissue that surrounds the brain and spinal cord, called the meninges. There are several types of meningitis. The most common is viral meningitis. You get it when a virus enters the body through the nose or mouth and travels to the brain. Bacterial meningitis is rare but can be deadly.

Read the full article at MedlinePlus

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

Convert B37.5 to ICD-9-CMHistory

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

ICD-9-CM
112.83 Candidal meningitis
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About B37.5Overview

What is the ICD-10 code for candidal meningitis?

The ICD-10-CM code for candidal meningitis is B37.5 (sometimes written as B375). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is B37.5 (Candidiasis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report candidal meningitis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does B37.5 group to?

When candidal meningitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 24, 98, 974, 976, 99, 975, 23, 97, with relative weights from 0.7879 to 5.7422 depending on complications. Higher weights mean higher Medicare reimbursement.

Is B37.5 a CC or MCC?

CMS lists B37.5 as an MCC (major complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 63 closely related codes in its exclusion list.

Can B37.5 be reported with P37.5?

Not as a rule. The Excludes1 note at B37, which applies to B37.5, 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).