2026 ICD-10-CM Diagnosis Code A02.1Salmonella sepsis

ICD-10-CM Codes›A00–B99›A00-A09›A02

ICD-10-CM A02.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A02.1 is a billable ICD-10-CM diagnosis code for Salmonella sepsis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 870 through 872, 974 through 976. Coders also document this condition as bacteremia caused by Salmonella. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections and Septicemia.

Code Identity

ICD-10-CM Code
A02.1
Billable Status
Yes — Valid for Submission
Code Describes
Salmonella sepsis
Short Description
Salmonella sepsis
Same as the full description in the CMS dataset.
Parent Code
A02
Other salmonella infections

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA00-A09Intestinal infectious diseases
CategoryA02Other salmonella infections
This CodeA02.1Salmonella sepsis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bacteremia caused by Salmonella
  • Recurrent salmonella sepsis co-occurrent with human immunodeficiency virus infection
  • Sepsis caused by coliform bacteria
  • Sepsis caused by Salmonella

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)
      • Salmonella (aertrycke) (arizonae) (cholerae-suis) (enteritidis) (gallinarum) (suipestifer) (typhimurium)
        • with
          • sepsis
    • Intoxication
      • foodborne
        • due to
          • Salmonella
            • with
              • sepsis
    • Poisoning(acute)
      • food NEC
        • due to
          • salmonella (aertrycke) (choleraesuis) (enteritidis) (gallinarum) (paratyphi) (suipestifer)
            • with
              • sepsis
    • Sepsis(generalized) (unspecified organism)
      • Salmonella (arizonae) (cholerae-suis) (enteritidis) (typhimurium)

Clinical ClassificationClinical

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

CCSR INF003
Bacterial infections
Default principal diagnosis: inpatient No · outpatient No
CCSR INF002
Septicemia
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Salmonella Infections

    infections with bacteria of the genus salmonella.

  • Salmonella Infections, Animal

    infections in animals with bacteria of the genus salmonella.

  • Salmonella

    a genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that utilizes citrate as a sole carbon source. it is pathogenic for humans, causing enteric fevers, gastroenteritis, and bacteremia. food poisoning is the most common clinical manifestation. organisms within this genus are separated on the basis of antigenic characteristics, sugar fermentation patterns, and bacteriophage susceptibility.

Patient EducationClinical

Salmonella Infections

Salmonella is the name of a group of bacteria. In the United States, it is a common cause of foodborne illness. Salmonella occurs in raw poultry, eggs, beef, and sometimes on unwashed fruit and vegetables. You also can get infected after handling pets, especially reptiles like snakes, turtles, and lizards.

Read the full article at MedlinePlus

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

Convert A02.1 to ICD-9-CMHistory

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

ICD-9-CM
003.1 Salmonella septicemia
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
995.91 Sepsis
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

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 A02.1Overview

Is A02.1 (Other salmonella infections) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report Salmonella sepsis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does A02.1 group to?

When Salmonella sepsis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 870, 871, 872, 974, 975, 976, with relative weights from 0.8945 to 6.9118 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of A02.1?

Under the General Equivalence Mappings, Salmonella sepsis converts to ICD-9-CM 003.1 (Salmonella septicemia) and 995.91 (sepsis). The mapping is approximate, so confirm the match fits the documentation.

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.