ICD-10 Code A07 – Other protozoal intestinal diseases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A07 – Other protozoal intestinal diseases
What it is
A07 identifies intestinal infections caused by protozoa that are not classified elsewhere. Use it when the record documents a protozoal intestinal disease, but the specific organism is not named or does not have a more specific code.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include diarrhea, abdominal discomfort, nausea, and other gastrointestinal symptoms consistent with an intestinal protozoal infection.
When to use this code
Use A07 when the provider documents a protozoal intestinal disease without a more specific diagnosis. It may fit cases where the organism is unspecified, or where the chart supports an intestinal protozoal infection but not a narrower code. Check documentation for organism details and site specificity.
Do not use for
Do not use A07 for bacterial, viral, or helminth intestinal infections. Also avoid it when the record supports a more specific protozoal code or when the diagnosis is not clearly documented.
Coding tip
Review the note for the exact organism and infection site before assigning A07.