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    v1.0.28
    OpenPayerBilling CodesIntestinal infectious diseasesICD-10-CM a08-viral-and-other-specified-intestinal-infections
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    ICD-10-CM Code For Viral And Other Specified Intestinal Infections: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group A08 includes acute viral and other specified intestinal infections such as viral gastroenteritis and other non-bacterial enteritides that present with diarrhea and related gastrointestinal symptoms. These ICD-10-CM diagnosis codes are used to document acute infectious enteric episodes, capturing severity, etiology when known, and any associated complications or systemic involvement. Accurate coding within the ICD-10-CM A08 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM A08: Viral And Other Specified Intestinal Infections Overview

    The ICD-10-CM A08 group encompasses viral and other specified acute intestinal infections that primarily affect the gastrointestinal tract, including viral gastroenteritis and other non-bacterial enteritides. These diagnoses target the intestines and related digestive symptoms such as diarrhea, vomiting, and abdominal pain. Accurate coding matters for correct clinical documentation and supports appropriate reimbursement by reflecting the specific infectious etiology and clinical complexity.

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    When to Use

    Use a code from this group when a patient has an acute intestinal infection confirmed or suspected to be viral or otherwise specified and bacterial causes are not coded in a different group. These codes apply when documentation describes gastroenteritis or enteritis attributable to viral agents or other specified non-bacterial causes, including associated symptoms and complications.

    ICD-10-CM Codes

    9 rows

    ICD-10-CM CodeDescription
    A08.0Rotaviral enteritis
    A08.11Acute gastroenteropathy due to Norwalk agent
    A08.19Acute gastroenteropathy due to other small round viruses
    A08.2Adenoviral enteritis
    A08.31Calicivirus enteritis
    A08.32Astrovirus enteritis
    A08.39Other viral enteritis
    A08.4Viral intestinal infection, unspecified
    A08.8Other specified intestinal infections

    DRG Codes

    2 rows

    DRG CodeDescription
    391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC
    392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC

    Typical Clinical Scenarios

    • An otherwise healthy adult presents to urgent care with sudden-onset watery diarrhea, vomiting, abdominal cramping, and mild dehydration after attending a family picnic; stool testing or clinical history suggests norovirus or other viral gastroenteritis, and the encounter documents an acute viral intestinal infection, so a code from this group is assigned. Typical codes: A08.0, A08.4
    • An elderly nursing home resident develops profuse watery diarrhea over several days with significant fluid-electrolyte imbalance requiring hospitalization; clinical evaluation identifies rotavirus or adenovirus as the causative agent or documents specified viral enteritis, prompting assignment of an acute viral intestinal infection code to capture the infectious cause and guide infection control. Typical codes: A08.0, A08.31
    • A patient with prolonged postinfectious malabsorption and chronic diarrheal symptoms following an acute enteric viral illness presents for outpatient management and documentation of sequelae; the clinician documents a resolved acute infection with ongoing intestinal symptoms attributed to prior viral infection, leading to selection of a code for other specified intestinal infections or sequelae in this group. Typical codes: A08.8, A08.19

    Related Codes

    A00-CHOLERA

    ICD-10-CM Code For Cholera: Group Overview

    A01-TYPHOID-AND-PARATYPHOID-FEVERS

    ICD-10-CM Code For Typhoid And Paratyphoid Fevers: Group Overview

    A02-OTHER-SALMONELLA-INFECTIONS

    ICD-10-CM Code For Other Salmonella Infections: Group Overview

    A03-SHIGELLOSIS

    ICD-10-CM Code For Shigellosis: Group Overview

    A04-OTHER-BACTERIAL-INTESTINAL-INFECTIONS

    ICD-10-CM Code For Other Bacterial Intestinal Infections: Group Overview

    A05-OTHER-BACTERIAL-FOODBORNE-INTOXICATIONS

    ICD-10-CM Code For Other Bacterial Foodborne Intoxications Not Elsewhere Classified: Group Overview

    A06-AMEBIASIS

    ICD-10-CM Code For Amebiasis: Group Overview

    A07-OTHER-PROTOZOAL-INTESTINAL-DISEASES

    ICD-10-CM Code For Other Protozoal Intestinal Diseases: Group Overview

    Coming soon

    A09-INFECTIOUS-GASTROENTERITIS-AND-COLITIS

    ICD-10-CM Code For Infectious Gastroenteritis And Colitis, Unspecified: 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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