ICD-10 Code A02.0 – Salmonella enteritis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A02.0 – Salmonella enteritis
What it is
A02.0 identifies Salmonella infection limited to the intestine, causing inflammatory gastroenteritis. Use it when documentation states Salmonella enteritis or a Salmonella intestinal infection.
Clinical signs
Typical findings include acute diarrhea, abdominal cramping, fever, nausea, and vomiting after exposure to contaminated food or water. Clinical features vary; refer to documentation.
When to use this code
Use A02.0 when the provider documents Salmonella enteritis, Salmonella gastroenteritis, or intestinal Salmonella infection. It fits confirmed or clinically diagnosed intestinal illness when the record supports Salmonella as the cause. If the note only says “gastroenteritis” without an organism, check documentation.
Do not use for
Do not assign this code for non-Salmonella gastroenteritis or for Salmonella infections outside the intestine, such as septicemia. Check documentation if the site or organism is unclear.
Coding tip
Look for the organism name in the assessment, stool results, or discharge diagnosis before coding A02.0.