ICD‑10 Code A073 – Isosporiasis Isosporiasis
Clinical context, related codes, and quick guidance
Billable
Active (Valid as of April 2025) · ICD-10-CM (US)
Code Details
| Code | A073 |
|---|---|
| Category | A07 – Other protozoal intestinal diseases Other protozoal intestinal diseases |
| Version | ICD-10-CM (US) |
| Status | Active (Valid as of April 2025) |
Plain‑English Summary
ICD-10-CM code A07.3 represents Isosporiasis, an intestinal disease caused by parasitic protozoa of the genus Isospora, specifically Isospora belli and Isospora hominis. This condition is also known as intestinal coccidiosis, characterized by the ingestion of oocysts that can lead to tissue cysts and gastrointestinal symptoms.
When to Use This Code
- Infection due to Isospora belli and Isospora hominis
- Intestinal coccidiosis
- Isosporosis
Related Codes
Browse category »| Code | Description |
|---|---|
| A070 | Balantidiasis Balantidiasis |
| A071 | Giardiasis [lambliasis] Giardiasis [lambliasis] |
| A072 | Cryptosporidiosis Cryptosporidiosis |
| A074 | Cyclosporiasis Cyclosporiasis |
| A078 | Other specified protozoal intestinal diseases Other specified protozoal intestinal diseases |
| A079 | Protozoal intestinal disease, unspecified Protozoal intestinal disease, unspecified |
FAQ
Isosporiasis, coded as A07.3 in ICD-10-CM, is an intestinal infection caused by parasitic protozoa from the genus Isospora, most commonly Isospora belli and Isospora hominis. It is characterized by gastrointestinal symptoms resulting from the parasite's activity in the gut.
A07.3 is a billable and specific ICD-10-CM code, meaning it can be used by healthcare providers to indicate a diagnosis of Isosporiasis for reimbursement purposes. It became effective on October 1, 2025, for the 2026 edition.
While not explicitly detailed in the clinical information, Isosporiasis, as an intestinal parasitic disease, typically presents with symptoms such as diarrhea (which can be chronic or severe, especially in immunocompromised individuals), abdominal pain, nausea, vomiting, weight loss, and fatigue. It is often linked to coccidiosis infections.
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Tags :
A07.3
Isosporiasis
Isospora belli infection
Isospora hominis infection
Intestinal coccidiosis
Isosporosis
Protozoal intestinal disease
Parasitic infection
ICD-10 A07.3
ICD10 code for Isosporiasis
Coccidiosis infection