ICD-10 Code A05.3 – Foodborne Vibrio parahaemolyticus intoxication (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A05.3 – Foodborne Vibrio parahaemolyticus intoxication
What it is
This code identifies food poisoning caused by Vibrio parahaemolyticus, usually after eating contaminated seafood. Use it when documentation states foodborne intoxication from this organism.
Clinical signs
Typical features include acute gastroenteritis with diarrhea, abdominal cramps, nausea, vomiting, and sometimes fever. Clinical features vary; refer to documentation.
When to use this code
Use A05.3 when the provider documents foodborne Vibrio parahaemolyticus intoxication or clearly attributes the illness to this pathogen. It fits confirmed or specifically documented suspected cases, not nonspecific gastroenteritis. Check documentation if the source organism is not stated.
Do not use for
Do not use this code for unspecified food poisoning, viral gastroenteritis, or other Vibrio species. If the record does not identify Vibrio parahaemolyticus, choose a more accurate code or check documentation.
Coding tip
Code only when the organism is named in the chart; otherwise, verify the diagnosis before assigning A05.3.