ICD-10 Code A05.5 – Foodborne Vibrio vulnificus intoxication (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A05.5 – Foodborne Vibrio vulnificus intoxication
What it is
A05.5 identifies foodborne illness caused by Vibrio vulnificus. Use it when documentation states the infection or intoxication came from contaminated food, usually seafood.
Clinical signs
Typical features include acute gastrointestinal illness such as nausea, vomiting, abdominal cramps, and diarrhea after exposure to contaminated food. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider clearly documents Vibrio vulnificus as the foodborne cause of the illness. It is appropriate for confirmed or clinically diagnosed cases linked to ingestion, not simply exposure. Check documentation if the source or organism is uncertain.
Do not use for
Do not use A05.5 for non-foodborne Vibrio infections or for unspecified gastroenteritis without documented Vibrio vulnificus. If the record does not support this exact organism and route, check documentation.
Coding tip
Verify both the organism and the foodborne source before assigning A05.5.