2026 ICD-10-CM Diagnosis Code A95.9Yellow fever, unspecified

ICD-10-CM Codes›A00–B99›A90-A99›A95

ICD-10-CM A95.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A95.9 is a billable ICD-10-CM diagnosis code for yellow fever, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 865 through 866. Coders also document this condition as acute viral hepatitis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Viral infection.

Code Identity

ICD-10-CM Code
A95.9
Billable Status
Yes — Valid for Submission
Code Describes
Yellow fever, unspecified
Short Description
Yellow fever, unspecified
Same as the full description in the CMS dataset.
Parent Code
A95
Yellow fever

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers
CategoryA95Yellow fever
This CodeA95.9Yellow fever, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute viral hepatitis
  • Hepatitis in yellow fever
  • Yellow fever

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.

    • Febris, febrile
      • flava
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • yellow
    • Typhus(fever)
      • amarillic

Clinical ClassificationClinical

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

CCSR INF008
Viral infection
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Yellow Fever

    an acute infectious disease primarily of the tropics, caused by a virus and transmitted to man by mosquitoes of the genera aedes and haemagogus. the severe form is characterized by fever, hemolytic jaundice, and renal damage.

  • Yellow Fever Vaccine

    vaccine used to prevent yellow fever. it consists of a live attenuated 17d strain of the yellow fever virus.

  • Yellow fever virus

    the type species of the flavivirus genus. principal vector transmission to humans is by aedes spp. mosquitoes.

  • Jaundice

    a clinical manifestation of hyperbilirubinemia, characterized by the yellowish staining of the skin; mucous membrane; and sclera. clinical jaundice usually is a sign of liver dysfunction.

Patient EducationClinical

Hemorrhagic Fevers

Viral hemorrhagic fevers (VHFs) are a group of illnesses caused by four families of viruses. These include the Ebola and Marburg, Lassa fever, and yellow fever viruses. VHFs have common features: they affect many organs, they damage the blood vessels, and they affect the body's ability to regulate itself.

Read the full article at MedlinePlus

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

Convert A95.9 to ICD-9-CMHistory

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

ICD-9-CM
060.9 Yellow fever NOS
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 A95.9Overview

Is A95.9 (Yellow fever) a billable code?

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

What MS-DRG does A95.9 group to?

When yellow fever, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 865, 866, with relative weights from 0.8696 to 1.4983 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of A95.9?

Under the General Equivalence Mappings, yellow fever, unspecified converts to ICD-9-CM 060.9 (yellow fever NOS). 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.