ICD‑10 Code A09 – Infectious gastroenteritis and colitis, unspecified Infectious gastroenteritis and colitis, unspecified
Clinical context, related codes, and quick guidance
Billable
Active (Valid as of April 2025) · ICD-10-CM (US)
Code Details
| Code | A09 |
|---|---|
| Category | A083 – Other viral enteritis Other viral enteritis |
| Version | ICD-10-CM (US) |
| Status | Active (Valid as of April 2025) |
Plain‑English Summary
ICD-10-CM code A09 denotes unspecified infectious gastroenteritis and colitis. This code is used when the specific infectious agent causing inflammation of the stomach, small intestine, and colon is not identified. It covers a range of symptoms often associated with viral or bacterial infections of the digestive tract.
When to Use This Code
- Infectious colitis NOS
- Infectious enteritis NOS
- Infectious gastroenteritis NOS
Related Codes
Browse category »| Code | Description |
|---|---|
| A0831 | Calicivirus enteritis Calicivirus enteritis |
| A0832 | Astrovirus enteritis Astrovirus enteritis |
| A0839 | Other viral enteritis Other viral enteritis |
| A084 | Viral intestinal infection, unspecified Viral intestinal infection, unspecified |
| A088 | Other specified intestinal infections Other specified intestinal infections |
FAQ
ICD-10-CM code A09 represents infectious gastroenteritis and colitis, unspecified. This means the patient has an inflammation of the stomach and intestines due to an infection, but the specific pathogen (like a particular virus or bacteria) has not been identified or specified.
Symptoms typically associated with A09, or unspecified infectious gastroenteritis and colitis, include diarrhea, abdominal cramps, nausea, vomiting, and sometimes fever. These symptoms arise from inflammation of the gastrointestinal tract due to a viral or bacterial infection.
Code A09 should be used when the healthcare provider diagnoses infectious gastroenteritis or colitis but cannot specify the exact infectious agent. If a specific virus (e.g., Norovirus) or bacteria (e.g., Salmonella) is identified, a more specific ICD-10-CM code from categories A00-A08 should be used instead.
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Tags :
A09
ICD-10-CM A09
infectious gastroenteritis
infectious colitis
unspecified gastroenteritis
unspecified colitis
infectious enteritis
traveler's diarrhea ICD-10
post-dysenteric arthropathy ICD-10
ICD10 code for infectious gastroenteritis
ICD10 code for colitis unspecified
ICD10 code for infectious diarrhea