2027 ICD-10-CM Diagnosis Code A08.0Rotaviral enteritis
ICD-10-CM Codes›A00–B99›A00-A09›A08
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
A08.0 is a billable ICD-10-CM diagnosis code for rotaviral enteritis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) 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 95 closely related codes. Coders also document this condition as disease caused by Rotavirus. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Intestinal infection and Viral infection.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Disease caused by Rotavirus
- Enteritis caused by Rotavirus
- Rotavirus food poisoning
- Viral food poisoning
- Viral gastroenteritis caused by Rotavirus
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to A08.0: its own notes plus those printed at A08 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- diseases generally recognized as communicable or transmissible
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- 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
Add a second code, after this one, to fully describe the condition.
- code to identify resistance to antimicrobial drugs (Z16.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name A08.0, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming A08.0: they are not reported together with it, unless the two conditions are unrelated.
- J09.X3 Influenza due to identified novel influenza A virus with gastrointestinal manifestations'intestinal flu' [viral gastroenteritis] (A08.-) names A08.-, which includes this code
- J10.2 Influenza due to other identified influenza virus with gastrointestinal manifestations'intestinal flu' [viral gastroenteritis] (A08.-) names A08.-, which includes this code
- J11.2 Influenza due to unidentified influenza virus with gastrointestinal manifestations'intestinal flu' [viral gastroenteritis] (A08.-) names A08.-, which includes this code
Excludes2 2
These codes carry an Excludes2 note naming A08.0: its condition is not part of those codes, and both may be reported when the patient has both.
- Block P35-P39 Infections specific to the perinatal period
- P37 Other congenital infectious and parasitic diseases
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Gastroenteritis (acute) (chronic) (noninfectious) See Also: Enteritis; K52.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Rotaviral Enteritis
enteritis attributed to the rotavirus.
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 A08.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About A08.0Overview
What is the ICD-10 code for rotaviral enteritis?
The ICD-10-CM code for rotaviral enteritis is A08.0 (sometimes written as A080). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is A08.0 (Viral and other specified intestinal infections) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report rotaviral enteritis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does A08.0 group to?
When rotaviral enteritis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 392, 391, with relative weights from 0.7645 to 1.2389 depending on complications. Higher weights mean higher Medicare reimbursement.
Is A08.0 a CC or MCC?
CMS lists A08.0 as a CC (complication or comorbidity) for FY 2027. 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 95 closely related codes in its exclusion list.
Can A08.0 be reported with J09.X3?
Not as a rule. The Excludes1 note at A08, which applies to A08.0, lists "influenza with involvement of gastrointestinal tract (J09.X3, J10.2, J11.2)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
