ICD‑10 Code A031 – Shigellosis due to Shigella flexneri Shigellosis due to Shigella flexneri
Clinical context, related codes, and quick guidance
Billable
Active (Valid as of April 2025) · ICD-10-CM (US)
Code Details
| Code | A031 |
|---|---|
| Category | A03 – Shigellosis Shigellosis |
| Version | ICD-10-CM (US) |
| Status | Active (Valid as of April 2025) |
Plain‑English Summary
ICD-10-CM code A03.1 designates shigellosis specifically caused by the bacterium Shigella flexneri, also known as Group B shigellosis. This diagnosis code is used for reimbursement and became effective October 1, 2025, for the 2026 edition.
When to Use This Code
- Group B shigellosis
Related Codes
Browse category »| Code | Description |
|---|---|
| A030 | Shigellosis due to Shigella dysenteriae Shigellosis due to Shigella dysenteriae |
| A032 | Shigellosis due to Shigella boydii Shigellosis due to Shigella boydii |
| A033 | Shigellosis due to Shigella sonnei Shigellosis due to Shigella sonnei |
| A038 | Other shigellosis Other shigellosis |
| A039 | Shigellosis, unspecified Shigellosis, unspecified |
FAQ
ICD-10-CM code A03.1 specifically represents shigellosis caused by the bacterium Shigella flexneri. This condition is also referred to as Group B shigellosis and is an intestinal infection.
Shigella flexneri infection, a form of bacillary dysentery, primarily affects the intestines and can cause severe diarrhea, abdominal cramps, fever, and sometimes bloody or mucus-filled stools.
The 2026 edition of ICD-10-CM code A03.1, which is a billable code, became effective on October 1, 2025, for diagnoses and reimbursement purposes in the US.
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Tags :
A03.1
Shigellosis due to Shigella flexneri
Group B shigellosis
Shigella flexneri infection
bacillary dysentery
ICD-10 A03.1
ICD10 code for Shigella flexneri
ICD10 code for shigellosis
gastrointestinal infection
diarrhea
infectious disease
intestinal infection