ICD-10 Code A07.4 – Cyclosporiasis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A07.4 – Cyclosporiasis
What it is
A07.4 identifies cyclosporiasis, an intestinal infection caused by the parasite Cyclospora. Use it when documentation states this specific parasitic cause of gastrointestinal illness.
Clinical signs
Typical findings include prolonged watery diarrhea, abdominal cramps, nausea, fatigue, and reduced appetite. Clinical features vary; refer to documentation when the record does not clearly confirm Cyclospora infection.
When to use this code
Use A07.4 when the provider documents cyclosporiasis, Cyclospora infection, or confirmed intestinal infection due to this parasite. It may also fit when the chart links the diagnosis to compatible stool testing or other documented confirmation. If the record only says infectious diarrhea, check documentation before assigning this code.
Do not use for
Do not use A07.4 for nonspecific diarrhea, food poisoning, or other parasitic intestinal infections unless Cyclospora is documented. Check documentation if the note does not clearly identify cyclosporiasis.
Coding tip
Code A07.4 only when the provider names Cyclospora or cyclosporiasis; otherwise, query or code the documented symptom or unspecified infection.