A90-A99

Non-Billable
ChapterA00–B99
Rankblock
Official Description

Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99)

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes
  • diseases generally recognized as communicable or transmissible
Excludes1(Not coded here)
  • certain localized infections - see body system-related chapters
Excludes2(Not included here)
  • carrier or suspected carrier of infectious disease (Z22.-)
  • 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
  • code to identify resistance to antimicrobial drugs (Z16.-)

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)
A90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99)
A90Dengue fever [classical dengue]
A91Dengue hemorrhagic fever
A92Other mosquito-borne viral fevers
A93Other arthropod-borne viral fevers, not elsewhere classified
A94Unspecified arthropod-borne viral fever
A95Yellow fever
A96Arenaviral hemorrhagic fever
A98Other viral hemorrhagic fevers, not elsewhere classified
A99Unspecified viral hemorrhagic fever

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A90-A99:

chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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