All ICD10 Codes

A99

Billable
ChapterA00–B99
Rankcategory
Description

Unspecified viral hemorrhagic fever

About ICD-10-CM code A99

The ICD-10-CM tabular list places Unspecified viral hemorrhagic fever at code A99, inside A00-B99 Certain Infectious and Parasitic Diseases, within Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99). You can submit this code on claims since it carries full billing specificity.

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes
  • diseases generally recognized as communicable or transmissible
Excludes1(Not coded here. Use a different code.)
  • certain localized infections - see body system-related chapters
Excludes2(Not included here. Code separately if applicable.)
  • 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

BillableHas subcodes
CH1Certain infectious and parasitic diseases (A00-B99)
A90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99)
A99Unspecified viral hemorrhagic feverBillable

Applicable Ancestor Context

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

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

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 865
Viral Illness with MCC
DRG 866
Viral Illness without MCC

Cross Reference

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