U.S. ICD-10-CM · FY 2027

A03.1 ICD-10-CM Code: Shigellosis due to Shigella flexneri

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

A03.1

Shigellosis due to Shigella flexneri

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where A03.1 sits

  1. 1

    Chapter 1

    Certain infectious and parasitic diseases (A00-B99)

  2. 2

    Section

    Intestinal infectious diseases (A00-A09)

  3. 3

    Category A03

    Shigellosis

  4. 4

    Code A03.1

    Shigellosis due to Shigella flexneri

Documentation details

Notes for this code

Inclusion terms

  • Group B shigellosis

Code first

No “code first” instruction is listed for A03.1.

Use additional code

No “use additional code” instruction is listed for A03.1.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for A03.1.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for A03.1.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code A03.1 mean?

A03.1 is the FY 2027 U.S. ICD-10-CM code for “Shigellosis due to Shigella flexneri.”

Is A03.1 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, A03.1 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is A03.1 located in ICD-10-CM?

A03.1 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Intestinal infectious diseases (A00-A09) (A00–A09), under category A03, Shigellosis.

What coding notes are listed for A03.1?

Its listed inclusion terms are Group B shigellosis. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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