ICD-10-CM 2027 diagnosis code

A98Other viral hemorrhagic fevers, not elsewhere classified

Not billable — use a more specific code

A98 is a header code, so it can't be reported by itself. Choose one of the 7 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About A98

A98 is the ICD-10-CM diagnosis code for other viral hemorrhagic fevers, not elsewhere classified. It belongs to block A90-A99 (arthropod-borne viral fevers and viral hemorrhagic fevers) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: A98.0 (fever), A98.1 (fever), A98.2 (disease), A98.3 (disease), A98.4 (disease), A98.5 (syndrome) and A98.8 (fevers).

Don't report A98 together with the conditions in its Excludes1 note: chikungunya hemorrhagic fever (A92.0) and dengue hemorrhagic fever (A91).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under A98

Coding notes

Excludes1Not coded here — never report together with this code

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

Notes that apply from higher levels

Instructions written at a parent level also apply to A98.

Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about A98

Is A98 billable?: No. A98 is a header code. Report one of its more specific subcodes instead.