2026 ICD-10-CM Diagnosis Code A98Other viral hemorrhagic fevers, not elsewhere classified

ICD-10-CM Codes›A00–B99›A90-A99›A98

ICD-10-CM A98
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A98 is a non-billable ICD-10-CM category code for other viral hemorrhagic fevers, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A98.0, A98.1, A98.2, and A98.3.

Code Identity

ICD-10-CM Code
A98
Billable Status
No — Non-Billable Category
Code Describes
Other viral hemorrhagic fevers, not elsewhere classified
Chapter
A90-A99
Arthropod-borne viral fevers and viral hemorrhagic fevers

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers
CategoryA98Other viral hemorrhagic fevers, not elsewhere classified
This CodeA98Other viral hemorrhagic fevers, not elsewhere classified

Specific Coding for Other viral hemorrhagic fevers, not elsewhere classifiedOverview

Non-specific codes like A98 require more characters. Use one of these billable codes instead:

  • Use A98.0 for Crimean-Congo hemorrhagic fever

  • Use A98.1 for Omsk hemorrhagic fever

  • Use A98.2 for Kyasanur Forest disease

  • Use A98.3 for Marburg virus disease

  • Use A98.4 for Ebola virus disease

  • Use A98.5 for Hemorrhagic fever with renal syndrome

  • Use A98.8 for Other specified viral hemorrhagic fevers

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • chikungunya hemorrhagic fever A92.0
  • dengue hemorrhagic fever A91

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.

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 A98Overview

Is A98 (Other viral hemorrhagic fevers, not elsewhere classified) a billable code?

No. This is a category header that groups the codes for other viral hemorrhagic fevers, not elsewhere classified, and headers cannot be submitted on claims. Claims for other viral hemorrhagic fevers, not elsewhere classified need a more specific code from this category, such as A98.0, A98.1, and A98.2.