ICD‑10 Code A049 – Bacterial intestinal infection, unspecified Bacterial intestinal infection, unspecified
Clinical context, related codes, and quick guidance
Billable
Active (Valid as of April 2025) · ICD-10-CM (US)
Code Details
| Code | A049 |
|---|---|
| Category | A047 – Enterocolitis due to Clostridium difficile Enterocolitis due to Clostridium difficile |
| Version | ICD-10-CM (US) |
| Status | Active (Valid as of April 2025) |
Plain‑English Summary
ICD-10-CM code A04.9 is used to designate an unspecified bacterial intestinal infection. This code is applied when a bacterial cause for an intestinal infection is known or suspected, but the specific type of bacteria has not been identified.
When to Use This Code
- Bacterial enteritis NOS
Related Codes
Browse category »| Code | Description |
|---|---|
| A0471 | Enterocolitis due to Clostridium difficile, recurrent Enterocolitis due to Clostridium difficile, recurrent |
| A0472 | Enterocolitis d/t Clostridium difficile, not spcf as recur Enterocolitis due to Clostridium difficile, not specified as recurrent |
| A048 | Other specified bacterial intestinal infections Other specified bacterial intestinal infections |
FAQ
ICD-10-CM code A04.9 represents an 'Unspecified bacterial intestinal infection.' This means a bacterial infection is present in the intestines, but the exact type of bacteria causing the infection has not been determined or documented.
Yes, A04.9 is a billable/specific ICD-10-CM code. It can be used for reimbursement purposes by healthcare providers to indicate a diagnosis.
The 2026 edition of ICD-10-CM A04.9 became effective on October 1, 2025.
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Tags :
A04.9
bacterial intestinal infection unspecified
unspecified bacterial enteritis
bacterial intestinal infection
intestinal infection
bacterial enteritis NOS
ICD-10 A04.9
ICD-10-CM A04.9
bacterial gut infection
gastrointestinal infection
diagnosis code A04.9
ICD10 code for bacterial intestinal infection