A03: Shigellosis
Codes under A03 (Shigellosis). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| A03.0 | Shigellosis due to Shigella dysenteriae | ✓ |
| A03.0 | Shigellosis due to Shigella dysenteriae | ✓ |
| A03.1 | Shigellosis due to Shigella flexneri | ✓ |
| A03.1 | Shigellosis due to Shigella flexneri | ✓ |
| A03.2 | Shigellosis due to Shigella boydii | ✓ |
| A03.2 | Shigellosis due to Shigella boydii | ✓ |
| A03.3 | Shigellosis due to Shigella sonnei | ✓ |
| A03.3 | Shigellosis due to Shigella sonnei | ✓ |
| A03.8 | Other shigellosis | ✓ |
| A03.8 | Other shigellosis | ✓ |
| A03.9 | Shigellosis, unspecified | ✓ |
| A03.9 | Shigellosis, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code A03?
A03 is an ICD-10-CM category covering Shigellosis. It contains 12 more specific diagnosis codes, 12 of which are billable.
Is A03 a billable code?
No — A03 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example A03.0 — Shigellosis due to Shigella dysenteriae). 12 of the 12 codes under A03 are billable.
What codes fall under A03?
A03 includes A03.0, A03.0, A03.1, A03.1, A03.2, plus 7 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free