ICD-10-CM Code For Other Arthropod Borne Viral Fevers Not Elsewhere Classified: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group A93 includes arthropod-borne viral fevers not classified elsewhere, such as certain mosquito- or tick-transmitted viral infections that present with systemic, neurologic, or hemorrhagic features. These ICD-10-CM diagnosis codes are used to document clinical encounters for patients with confirmed or suspected arthropod-borne viral infections, capturing disease severity, organ involvement, and clinical complexity relevant to this group. Accurate coding within the ICD-10-CM A93 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM A93: Other Arthropod-Borne Viral Fevers, Not Elsewhere Classified Overview

The ICD-10-CM A93 group represents arthropod-borne viral infections that are not classified elsewhere, typically transmitted by mosquitoes, ticks, or other arthropods and affecting multiple organ systems depending on the virus. These diagnoses primarily target infectious disease and systemic inflammatory presentations and may include febrile illnesses with neurologic or hemorrhagic manifestations. Accurate coding matters for reimbursement because it documents the specific infectious etiology and clinical complexity required for correct claim processing and resource allocation.

When to Use

Use a code from this group when a patient has a confirmed or suspected arthropod-borne viral infection that does not fit more specific International Classification of Diseases, Tenth Revision, Clinical Modification categories. Choose the most specific code available based on documented etiology, clinical presentation, and any identified complications.

ICD-10-CM Codes

4 rows

ICD-10-CM Code	Description
A93.0	Oropouche virus disease
A93.1	Sandfly fever
A93.2	Colorado tick fever
A93.8	Other specified arthropod-borne viral fevers

DRG Codes

2 rows

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

Typical Clinical Scenarios

An adult presents to the emergency department with acute onset high fever, severe myalgias, headache, and a diffuse maculopapular rash after returning from outdoor work in a region with known mosquito exposure. Laboratory testing shows recent arboviral infection (positive IgM) without hemorrhagic manifestations; the clinician documents an acute arthropod-borne viral febrile illness. A diagnosis from this group is assigned to capture an acute, non-hemorrhagic arboviral infection when a more specific virus is not identified. Typical codes: A93.0, A93.8
A pediatric patient is seen in outpatient clinic with recurrent episodes of fever, malaise, and intermittent arthralgias for several weeks following a suspected tick-borne viral exposure during a camping trip; initial PCR was negative for specific viruses and symptoms are resolving conservatively. The visit is for ongoing evaluation and symptomatic management of a post-infectious or subacute arthropod-borne viral syndrome where a specific pathogen has not been confirmed. A code from this group is used to document an ongoing, non-hemorrhagic arthropod-borne viral condition. Typical codes: A93.1, A93.8
An older adult with a history of chronic liver disease is admitted for altered mental status and hypotension after developing fever and petechial rash following mosquito exposure; labs indicate viral etiology with concern for progression toward hemorrhagic complications, though not yet meeting criteria for a hemorrhagic fever diagnosis. The hospitalization documents a serious complication in a patient with comorbidity that increases risk of severe outcome; a non-hemorrhagic arthropod-borne viral fever code from this group is assigned as a principal or secondary diagnosis depending on encounter focus. Typical codes: A93.2, A93.8

Related Codes

A90-DENGUE-FEVER-CLASSICAL-DENGUE

ICD-10-CM Code For Dengue Fever Classical Dengue: Group Overview

A91-DENGUE-HEMORRHAGIC-FEVER

ICD-10-CM Code For Dengue Hemorrhagic Fever: Group Overview

A92-OTHER-MOSQUITO-BORNE-VIRAL-FEVERS

ICD-10-CM Code For Other Mosquito Borne Viral Fevers: Group Overview

A94-UNSPECIFIED-ARTHROPOD-BORNE-VIRAL-FEVER

ICD-10-CM Code For Unspecified Arthropod-Borne Viral Fever: Group Overview

A95-YELLOW-FEVER

ICD-10-CM Code For Yellow Fever: Group Overview

A96-ARENAVIRAL-HEMORRHAGIC-FEVER

ICD-10-CM Code for Arenaviral Hemorrhagic Fever: Group Overview

A98-OTHER-VIRAL-HEMORRHAGIC-FEVERS

ICD-10-CM Code For Other Viral Hemorrhagic Fevers Not Elsewhere Classified: Group Overview

A99-UNSPECIFIED-VIRAL-HEMORRHAGIC-FEVER

ICD-10-CM Code For Unspecified Viral Hemorrhagic Fever: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

4 rows

ICD-10-CM Code	Description
A93.0	Oropouche virus disease
A93.1	Sandfly fever
A93.2	Colorado tick fever
A93.8	Other specified arthropod-borne viral fevers

DRG Codes

2 rows

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

Typical Clinical Scenarios

An adult presents to the emergency department with acute onset high fever, severe myalgias, headache, and a diffuse maculopapular rash after returning from outdoor work in a region with known mosquito exposure. Laboratory testing shows recent arboviral infection (positive IgM) without hemorrhagic manifestations; the clinician documents an acute arthropod-borne viral febrile illness. A diagnosis from this group is assigned to capture an acute, non-hemorrhagic arboviral infection when a more specific virus is not identified. Typical codes: A93.0, A93.8
A pediatric patient is seen in outpatient clinic with recurrent episodes of fever, malaise, and intermittent arthralgias for several weeks following a suspected tick-borne viral exposure during a camping trip; initial PCR was negative for specific viruses and symptoms are resolving conservatively. The visit is for ongoing evaluation and symptomatic management of a post-infectious or subacute arthropod-borne viral syndrome where a specific pathogen has not been confirmed. A code from this group is used to document an ongoing, non-hemorrhagic arthropod-borne viral condition. Typical codes: A93.1, A93.8
An older adult with a history of chronic liver disease is admitted for altered mental status and hypotension after developing fever and petechial rash following mosquito exposure; labs indicate viral etiology with concern for progression toward hemorrhagic complications, though not yet meeting criteria for a hemorrhagic fever diagnosis. The hospitalization documents a serious complication in a patient with comorbidity that increases risk of severe outcome; a non-hemorrhagic arthropod-borne viral fever code from this group is assigned as a principal or secondary diagnosis depending on encounter focus. Typical codes: A93.2, A93.8

Related Codes

A90-DENGUE-FEVER-CLASSICAL-DENGUE

ICD-10-CM Code For Dengue Fever Classical Dengue: Group Overview

A91-DENGUE-HEMORRHAGIC-FEVER

ICD-10-CM Code For Dengue Hemorrhagic Fever: Group Overview

A92-OTHER-MOSQUITO-BORNE-VIRAL-FEVERS

ICD-10-CM Code For Other Mosquito Borne Viral Fevers: Group Overview

A94-UNSPECIFIED-ARTHROPOD-BORNE-VIRAL-FEVER

ICD-10-CM Code For Unspecified Arthropod-Borne Viral Fever: Group Overview

A95-YELLOW-FEVER

ICD-10-CM Code For Yellow Fever: Group Overview

A96-ARENAVIRAL-HEMORRHAGIC-FEVER

ICD-10-CM Code for Arenaviral Hemorrhagic Fever: Group Overview

A98-OTHER-VIRAL-HEMORRHAGIC-FEVERS

ICD-10-CM Code For Other Viral Hemorrhagic Fevers Not Elsewhere Classified: Group Overview

A99-UNSPECIFIED-VIRAL-HEMORRHAGIC-FEVER

ICD-10-CM Code For Unspecified Viral Hemorrhagic Fever: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Other Arthropod Borne Viral Fevers Not Elsewhere Classified: Group Overview

Sign up for ICD-10-CM Code For Other Arthropod Borne Viral Fevers Not Elsewhere Classified: Group Overview policy alerts

ICD-10-CM A93: Other Arthropod-Borne Viral Fevers, Not Elsewhere Classified Overview

ICD-10-CM Code For Other Arthropod Borne Viral Fevers Not Elsewhere Classified: Group Overview

Sign up for ICD-10-CM Code For Other Arthropod Borne Viral Fevers Not Elsewhere Classified: Group Overview policy alerts

ICD-10-CM A93: Other Arthropod-Borne Viral Fevers, Not Elsewhere Classified Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which diagnoses are included in the ICD-10-CM A93 group?

What clinical presentations do A93 group diagnoses typically represent?

How does accurate coding within the A93 group affect claims?

Which DRGs are related to the A93 diagnosis group?

When should a coder use `A93.8` versus other A93 codes?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which diagnoses are included in the ICD-10-CM A93 group?

What clinical presentations do A93 group diagnoses typically represent?

How does accurate coding within the A93 group affect claims?

Which DRGs are related to the A93 diagnosis group?

When should a coder use `A93.8` versus other A93 codes?

References