A08.11 is the authoritative medical code for Acute gastroenteropathy due to Norwalk agent. This classification is used in medical billing and clinical recording to specify the clinical criteria for acute gastroenteropathy due to norwalk agent (ICD-10-CM A08.11), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Acute gastroenteropathy due to Norwalk agent is a billable ICD-10-CM diagnosis code A08.11. Inclusion terms: Acute gastroenteropathy due to Norovirus; Acute gastroenteropathy due to Norwalk-like agent. Excludes1 (not coded here): influenza with involvement of gastrointestinal tract (J09.X3, J10.2, J11.2).
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for A08.11 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Acute gastroenteropathy due to Norovirus
- Acute gastroenteropathy due to Norwalk-like agent
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- influenza with involvement of gastrointestinal tract (J09.X3, J10.2, J11.2)
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with A08.11?
Per Excludes1 instructions, A08.11 must not be reported with: influenza with involvement of gastrointestinal tract (J09.X3, J10.2, J11.2).
What conditions are included under A08.11?
Acute gastroenteropathy due to Norwalk agent includes: Acute gastroenteropathy due to Norovirus; Acute gastroenteropathy due to Norwalk-like agent.
Codes in This Family (11)
Official ICD-10-CM classifications in the same code family as A08.11, with their registry titles.
- A08 — Viral and other specified intestinal infections
- A08.0 — Rotaviral enteritis
- A08.1 — Acute gastroenteropathy due to Norwalk agent and other small round viruses
- A08.19 — Acute gastroenteropathy due to other small round viruses
- A08.2 — Adenoviral enteritis
- A08.3 — Other viral enteritis
- A08.31 — Calicivirus enteritis
- A08.32 — Astrovirus enteritis
- A08.39 — Other viral enteritis
- A08.4 — Viral intestinal infection, unspecified
- A08.8 — Other specified intestinal infections
Indexed Clinical Terms (5)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective), norovirus
- Gastroenteritis (acute) (chronic) (noninfectious), viral NEC, acute infectious, type Norwalk
- Gastroenteritis (acute) (chronic) (noninfectious), viral NEC, Norwalk agent
- Gastroenteropathy, acute, due to Norovirus
- Gastroenteropathy, acute, due to Norwalk agent
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: