A08: Viral and other specified intestinal infections
Codes under A08 (Viral and other specified intestinal infections). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| A08.0 | Rotaviral enteritis | ✓ |
| A08.0 | Rotaviral enteritis | ✓ |
| A08.1 | Acute gastroenteropathy due to Norwalk agent and other small round viruses | — |
| A08.1 | Acute gastroenteropathy due to Norwalk agent and other small round viruses | — |
| A08.2 | Adenoviral enteritis | ✓ |
| A08.2 | Adenoviral enteritis | ✓ |
| A08.3 | Other viral enteritis | — |
| A08.3 | Other viral enteritis | — |
| A08.4 | Viral intestinal infection, unspecified | ✓ |
| A08.4 | Viral intestinal infection, unspecified | ✓ |
| A08.8 | Other specified intestinal infections | ✓ |
| A08.8 | Other specified intestinal infections | ✓ |
| A08.11 | Acute gastroenteropathy due to Norwalk agent | ✓ |
| A08.11 | Acute gastroenteropathy due to Norwalk agent | ✓ |
| A08.19 | Acute gastroenteropathy due to other small round viruses | ✓ |
| A08.19 | Acute gastroenteropathy due to other small round viruses | ✓ |
| A08.31 | Calicivirus enteritis | ✓ |
| A08.31 | Calicivirus enteritis | ✓ |
| A08.32 | Astrovirus enteritis | ✓ |
| A08.32 | Astrovirus enteritis | ✓ |
| A08.39 | Other viral enteritis | ✓ |
| A08.39 | Other viral enteritis | ✓ |
Frequently asked questions
What is ICD-10-CM code A08?
A08 is an ICD-10-CM category covering Viral and other specified intestinal infections. It contains 22 more specific diagnosis codes, 18 of which are billable.
Is A08 a billable code?
No — A08 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example A08.0 — Rotaviral enteritis). 18 of the 22 codes under A08 are billable.
What codes fall under A08?
A08 includes A08.0, A08.0, A08.1, A08.1, A08.2, plus 17 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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