A07.3 is a billable and specific ICD-10-CM code. Accurate documentation of A07.3 facilitates proper diagnosis, effective management, and correct reimbursement.
This guideline will provide the use, official coding guidelines, and historical background of A07.3.
What is the ICD-10-CM Diagnosis Code for Isosporiasis?
The ICD-10-CM diagnosis code for Isosporiasis is A07.3.
Isosporiasis is a small intestinal infection caused by the parasitic protozoan Cystoisospora belli. It spreads through food or water contaminated with infected stool.
It causes watery diarrhea, stomach pain, fever, and weight loss. The infection can be serious in people with weak immune systems.
Proper documentation using A07.3 ensures patients receive appropriate care and enables accurate healthcare reimbursement.
Synonyms
- Coccidiosis
- Coccidiosis infection
History Background of ICD-10-CM Diagnosis Code A07.3
The ICD-9-CM system, first introduced in 1979, provided the initial framework for coding diseases and health-related conditions in the United States.
ICD-9-CM code 007.2 for Coccidiosis (Isosporiasis) directly maps to ICD-10-CM code A07.3.This coding remained consistent from 1979 to 2015.
While the ICD-9-CM system offered a basic approach to disease classification, modern healthcare needs more detail and specificity.
To address this, the ICD-10-CM system was launched in 2015, introducing a more comprehensive and accurate coding structure.
The transition from ICD-9-CM to ICD-10-CM significantly improved the ability to document and analyze conditions such as Isosporiasis.
The 2025 edition of ICD-10-CM A07.3 became effective on October 1, 2024.
| Year | ICD-10-CM Code | Description |
| 2020 | A07.3 | No Change |
| 2021 | A07.3 | No Change |
| 2022 | A07.3 | No Change |
| 2023 | A07.3 | No Change |
| 2024 | A07.3 | No Change |
| 2025 | A07.3 | No Change |
Other ICD-10-CM Diagnosis Codes in A07
ICD-10-CM code A07 | Other protozoal intestinal diseases has following sub categories including A07.3 :
- A07.0 Balantidiasis.
- A07.1 Giardiasis [lambliasis].
- A07.2 Cryptosporidiosis.
- A07.3 Isosporiasis.
- A07.4 Cyclosporiasis.
- A07.8 Other specified protozoal intestinal diseases.
- A07.9 Protozoal intestinal disease, unspecified.
Final Thought
Proper coding of A07.3 is essential for diagnosing and managing Isosporiasis. A clear understanding of its History, and correct usage enhances medical documentation and ensures effective treatment, patient care, supports healthcare planning, and guarantees proper reimbursement for medical services.
