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    OpenPayerBilling CodesArthropod-borne viral fevers and viral hemorrhagic feversICD-10-CM a91-dengue-hemorrhagic-fever
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    ICD-10-CM Code For Dengue Hemorrhagic Fever: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group A91 includes diagnoses for dengue hemorrhagic fever, a severe manifestation of dengue virus infection involving bleeding and plasma leakage. These ICD-10-CM diagnosis codes are used to document clinical presentations of severe dengue, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM A91 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM A91: Dengue Hemorrhagic Fever Overview

    The ICD-10-CM A91 group represents dengue hemorrhagic fever, a severe form of dengue virus infection characterized by plasma leakage, bleeding, and potential circulatory collapse. These diagnoses target systemic viral hemorrhagic manifestations caused by arthropod-borne flaviviruses affecting hemodynamic stability and coagulation. Accurate coding matters for appropriate clinical documentation, resource allocation, and reimbursement when complications or higher acuity care are required.

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    When to Use

    Use a code from this group when clinical documentation confirms dengue hemorrhagic fever with evidence of bleeding, plasma leakage, or hemodynamic compromise. Select codes that reflect the documented severity and associated complications to ensure accurate reporting and billing.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    A91Dengue hemorrhagic fever

    DRG Codes

    2 rows

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

    Typical Clinical Scenarios

    • An adult patient in a tropical region presents to the emergency department with high fever, severe myalgias, retro-orbital headache, abdominal pain, vomiting, petechial rash, and signs of plasma leakage (rising hematocrit with concurrent thrombocytopenia). Rapid antigen testing or serology is positive for dengue virus and clinicians diagnose dengue with hemorrhagic manifestations requiring inpatient monitoring and fluid resuscitation; a code from the group is assigned for the hemorrhagic form. Typical codes: A91
    • A pediatric patient is brought to urgent care after several days of fever, marked mucosal bleeding (epistaxis and gum bleeding), lethargy, and evidence of hypovolemia; lab results show significant thrombocytopenia and hemoconcentration. Because the child demonstrates dengue-associated hemorrhage and plasma leak necessitating urgent supportive care and hospitalization, the hemorrhagic dengue diagnosis is used. Typical codes: A91
    • An adult admitted to the hospital for management of severe dengue complications following recent travel presents with disseminated intravascular coagulation and multi-organ dysfunction attributable to dengue infection. The treating team documents dengue with hemorrhagic manifestations as the underlying cause of the coagulopathy and organ failure, prompting assignment of the hemorrhagic dengue diagnosis. Typical codes: A91

    Related Codes

    A90-DENGUE-FEVER-CLASSICAL-DENGUE

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

    A92-OTHER-MOSQUITO-BORNE-VIRAL-FEVERS

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

    A93-OTHER-ARTHROPOD-BORNE-VIRAL-FEVERS

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