ICD-10 Code A05 – Other Bacterial Foodborne Intoxications, Not Elsewhere Classified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A05 – Other bacterial foodborne intoxications, not elsewhere classified
What it is
This code covers food poisoning caused by bacteria or their toxins when the condition does not fit a more specific A05 subcategory. Use it for bacterial foodborne intoxications documented as other, unspecified, or not elsewhere classified.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include acute gastrointestinal symptoms after contaminated food exposure, such as nausea, vomiting, abdominal cramps, and diarrhea.
When to use this code
Use A05 when the record clearly identifies a bacterial foodborne intoxication but does not name a more specific organism or syndrome. It also fits cases documented as other bacterial food poisoning or not elsewhere classified. Check documentation if the provider names a specific infectious agent.
Do not use for
Do not use this code for viral gastroenteritis, parasitic infections, or noninfectious food intolerance. If the chart identifies a specific bacterial cause with a more precise code, use that code instead.
Coding tip
Code to the most specific documented cause, and query the provider if “food poisoning” is recorded without a bacterial explanation.