A08.1
Header — not billableAcute gastroenteropathy due to Norwalk agent and other small round viruses
The ICD-10 code for acute gastroenteropathy due to norwalk agent and other small round viruses is A08.1.
A08.1 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- A08.0Rotaviral enteritis
- A08.2Adenoviral enteritis
- A08.3Other viral enteritisnon-billable header
- A08.4Viral intestinal infection, unspecified
- A08.8Other specified intestinal infections
- A08.1Acute gastroenteropathy due to Norwalk agent and other small round virusesnon-billable header