2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Other viral hemorrhagic fevers, not elsewhere classified
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A98: its own notes plus those printed at 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 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.

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

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 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.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About A98Overview

What is the ICD-10 code for other viral hemorrhagic fevers, not elsewhere classified?

A98 is the ICD-10-CM category for other viral hemorrhagic fevers, not elsewhere classified, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can A98 be reported with A92.0?

Not as a rule. The Excludes1 note on A98 lists "chikungunya hemorrhagic fever (A92.0)". 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).