Other viral hemorrhagic fevers, not elsewhere classified (A98) ICD-10-CM
The A98 code range covers other viral hemorrhagic fevers, not elsewhere classified with 8 ICD-10-CM diagnosis codes. 7 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the A98 Range 8 codes · 7 billable
- A98 Other viral hemorrhagic fevers, not elsewhere classifiedNon-billable
- A98.0 Crimean-Congo hemorrhagic fever
- A98.1 Omsk hemorrhagic fever
- A98.2 Kyasanur Forest disease
- A98.3 Marburg virus disease
- A98.4 Ebola virus disease
- A98.5 Hemorrhagic fever with renal syndrome
- A98.8 Other specified viral hemorrhagic fevers
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A98 range.
Hemorrhagic Fever with Renal Syndrome
An acute febrile disease occurring predominately in Asia. It is characterized by fever, prostration, vomiting, hemorrhagic phenonema, shock, and renal failure. It is caused by any one of several closely related species of the genus ORTHOHANTAVIRUS. The most severe form is caused by HANTAAN VIRUS whose natural host is the rodent Apodemus agrarius. Milder forms are caused by SEOUL VIRUS and transmitted by the rodents Rattus rattus and R. norvegicus, and the PUUMALA VIRUS with transmission by Clethrionomys galreolus.
Hemorrhagic Fever, Crimean
A severe, often fatal disease in humans caused by the Crimean-Congo hemorrhagic fever virus (HEMORRHAGIC FEVER VIRUS, CRIMEAN-CONGO).
Hemorrhagic Fever, Ebola
A highly fatal, acute hemorrhagic fever caused by EBOLAVIRUS.
Hemorrhagic Fever, Omsk
Infection with the Omsk hemorrhagic fever virus, a Flavivirus.
Kyasanur Forest Disease
Tick-borne flavivirus infection occurring in the Kyasanur Forest in India.
Marburg Virus Disease
An RNA virus infection of rhesus, vervet, and squirrel monkeys transmissible to man.
About the A98 Code Range
These viral hemorrhagic fevers include named diseases and a form with a kidney-related syndrome.
The subdivisions distinguish Crimean-Congo hemorrhagic fever A98.0, Omsk hemorrhagic fever A98.1, and Kyasanur Forest disease A98.2. Marburg virus disease A98.3 and Ebola virus disease A98.4 have separate subdivisions. A98.5 identifies hemorrhagic fever with renal syndrome, where renal means kidney-related. A98.8 covers other specified viral hemorrhagic fevers.
Questions About This Page
How many billable codes are in the A98 range?
Of the 8 codes in this range, 7 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the A98 range classify?
The range classifies other viral hemorrhagic fevers, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
