2026 ICD-10-CM Diagnosis Code A08.19Acute gastroenteropathy due to other small round viruses
ICD-10-CM Codes›A00–B99›A00-A09›A08
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
A08.19 is a billable ICD-10-CM diagnosis code for acute gastroenteropathy due to other small round viruses. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 391 through 392. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 92 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Intestinal infection and Viral infection.
Code Identity
Code Classification
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Acute gastroenteropathy due to small round virus [SRV] NOS
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Bradley's disease A08.19
Goodall's disease A08.19
Spencer's disease A08.19
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Gastroenteritis
Gastroenteritis is an inflammation of the lining of the stomach and intestines. The main symptoms include vomiting and diarrhea. It is usually not serious in healthy people, but it can sometimes lead to dehydration or cause severe symptoms.
The full article covers:
- What is gastroenteritis?
- What causes gastroenteritis?
- What are the symptoms of gastroenteritis?
- How is gastroenteritis diagnosed?
- What are the treatments for gastroenteritis?
- Can gastroenteritis be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert A08.19 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About A08.19Overview
What is the ICD-10 code for acute gastroenteropathy due to other small round viruses?
The ICD-10-CM code for acute gastroenteropathy due to other small round viruses is A08.19 (sometimes written as A0819). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is A08.19 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report acute gastroenteropathy due to other small round viruses on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does A08.19 group to?
When acute gastroenteropathy due to other small round viruses is the principal diagnosis on an inpatient stay, it groups to MS-DRG 391, 392, with relative weights from 0.7796 to 1.2683 depending on complications. Higher weights mean higher Medicare reimbursement.
Is A08.19 a CC or MCC?
CMS lists A08.19 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 92 closely related codes in its exclusion list.
What is the ICD-9 equivalent of A08.19?
Under the General Equivalence Mappings, acute gastroenteropathy due to other small round viruses converts to ICD-9-CM 008.64 (int inf oth sml rnd vrus). The mapping is approximate, so confirm the match fits the documentation.
