2026 ICD-10-CM Diagnosis Code B95.1Streptococcus, group B, as the cause of diseases classified elsewhere

ICD-10-CM Codes›A00–B99›B95-B97›B95

ICD-10-CM B95.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B95.1 is a billable ICD-10-CM diagnosis code for Streptococcus, group B, as the cause of diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 867 through 869. The code is not accepted as a principal diagnosis by the Medicare Code Editor. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections.

Code Identity

ICD-10-CM Code
B95.1
Billable Status
Yes — Valid for Submission
Code Describes
Streptococcus, group B, as the cause of diseases classified elsewhere
Short Description
Streptococcus, group B, causing diseases classd elswhr
Parent Code
B95
Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified elsewhere

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB95-B97Bacterial and viral infectious agents
CategoryB95Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified elsewhere
This CodeB95.1Streptococcus, group B, as the cause of diseases classified elsewhere

Code EditsBilling

Medicare Code Editor checks that affect claim validity for B95.1.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Early neonatal infection caused by bacterium
  • Early neonatal infection caused by Streptococcus group B
  • Fetal infection caused by bacterium
  • Fetal infection caused by Streptococcus group B
  • Group B streptococcus infection in mother complicating childbirth
  • Infantile streptococcal infection
  • Invasive Group B beta-hemolytic streptococcal disease
  • Invasive streptococcal disease
  • Maternal infection caused by Streptococcus agalactiae
  • Neonatal streptococcal infection
  • Perinatal streptococcal infection
  • Streptococcus group B infection of the infant

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Infection, infected, infective(opportunistic)
      • bacterial NOS
        • as cause of disease classified elsewhere
          • Streptococcus
            • group B
    • Streptococcus, streptococcal
      • group
        • B, as cause of disease classified elsewhere

Clinical ClassificationClinical

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

CCSR INF003
Bacterial infections
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Streptococcal Infections

Strep is short for Streptococcus, a type of bacteria. There are several types. Two of them cause most of the strep infections in people: group A and group B.

Read the full article at MedlinePlus

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

Convert B95.1 to ICD-9-CMHistory

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

ICD-9-CM
041.02 Streptococcus group b
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B95.1Overview

Is B95.1 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report Streptococcus, group B, as the cause of diseases classified elsewhere on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B95.1 group to?

On inpatient claims, Streptococcus, group B, as the cause of diseases classified elsewhere maps to MS-DRG 867, 868, 869, with relative weights from 0.7297 to 2.0932 depending on complications. Higher weights mean higher Medicare reimbursement.

Can B95.1 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because Streptococcus, group B, as the cause of diseases classified elsewhere describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

What is the ICD-9 equivalent of B95.1?

Under the General Equivalence Mappings, Streptococcus, group B, as the cause of diseases classified elsewhere converts to ICD-9-CM 041.02 (Streptococcus group b). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.