ICD-10-CM 2027
ICD-10 code for Ebola virus disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › Ebola (virus)”. Page updated September 29, 2026.
About coding Ebola virus disease
The ICD-10-CM code for Ebola virus disease is A98.4 (Ebola virus disease).
Within A98 (other viral hemorrhagic fevers, not elsewhere classified), A98.4 is specifically for Ebola virus disease. Related codes cover Crimean-Congo hemorrhagic fever (A98.0), Omsk hemorrhagic fever (A98.1), Kyasanur Forest disease (A98.2), Marburg virus disease (A98.3), hemorrhagic fever with renal syndrome (A98.5) and other specified viral hemorrhagic fevers (A98.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 865 (Viral Illness with MCC, relative weight 1.3485) and DRG 866 (Viral Illness without MCC, relative weight 0.8692), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Ebola virus disease ICD-10 codes
What is the ICD-10 code for Ebola virus disease?
- A98.4 — Ebola virus disease.
Is A98.4 billable?
- Yes. A98.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A98.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A98.4 as a principal diagnosis.
Is A98.4 a CC or MCC?
- No. A98.4 is neither a CC nor an MCC under MS-DRG v44.0.