ICD-10 Code A04.5 – Campylobacter enteritis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A04.5 – Campylobacter enteritis
What it is
A04.5 identifies enteritis caused by Campylobacter infection. Use it when the record documents Campylobacter as the cause of infectious diarrhea or intestinal inflammation.
Clinical signs
Common findings include acute diarrhea, abdominal pain, fever, and sometimes nausea or vomiting. Clinical features vary; refer to documentation.
When to use this code
Use A04.5 when the clinician specifically diagnoses Campylobacter enteritis, gastroenteritis, or infectious diarrhea due to Campylobacter. You may also use it when the organism is confirmed and the intestinal infection is clearly documented. Check documentation if the note only says “food poisoning” or “diarrhea” without an organism.
Do not use for
Do not use this code for nonspecific diarrhea, dehydration alone, or other bacterial enteritis without Campylobacter documented. If the record does not identify the cause, check documentation.
Coding tip
Assign A04.5 only when Campylobacter is named as the cause in the provider record.