A03

Non-billable

Shigellosis

A03 is the ICD-10-CM code for Shigellosis. It is a non-billable category code — use a more specific child code such as A03.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
6
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code A03?
A03 is the ICD-10-CM code for "Shigellosis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A03 a billable code?
No — A03 is a non-billable header code. Use a more specific child code (such as A03.0) for billing.
What are the subcodes of A03?
A03 has 6 more specific child codes, including A03.0, A03.1, A03.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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