ICD-10 Code A07.2 – Cryptosporidiosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A07.2 – Cryptosporidiosis
What it is
Cryptosporidiosis is an intestinal infection caused by Cryptosporidium parasites. It usually affects the gastrointestinal tract and is coded when the diagnosis is confirmed or clearly documented.
Clinical signs
Common findings include watery diarrhea, abdominal cramps, nausea, and sometimes fever. Clinical features vary; refer to documentation, especially if the patient is immunocompromised.
When to use this code
Use A07.2 when the provider documents cryptosporidiosis, cryptosporidium infection, or intestinal infection due to Cryptosporidium. Apply it for confirmed cases and for encounters focused on evaluation or follow-up of the infection. Check documentation if the record only notes diarrhea without a specific cause.
Do not use for
Do not use this code for nonspecific gastroenteritis, diarrhea of unknown cause, or other parasitic infections. If the organism is not documented, choose the symptom or unspecified infection code instead.
Coding tip
Code the documented organism and site together when the record clearly identifies Cryptosporidium.