A03 Shigellosis

Not billable (header)Chapter 1

Report one of the more specific codes below.

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Codes under this one

A03.0 Shigellosis due to Shigella dysenteriae
A03.1 Shigellosis due to Shigella flexneri
A03.2 Shigellosis due to Shigella boydii
A03.3 Shigellosis due to Shigella sonnei
A03.8 Other shigellosis
A03.9 Shigellosis, unspecified

Instructional notes

Chapter 1

Excludes2Not included here: the patient may have both; report both when both are present.

carrier or suspected carrier of infectious disease (Z22.-)
certain localized infections - see body system-related chapters
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
infectious and parasitic diseases specific to the perinatal period (P35-P39)
influenza and other acute respiratory infections (J00-J22)

Use additional codeAdd a second code for the full picture.

code to identify resistance to antimicrobial drugs (Z16.-)

Includes

diseases generally recognized as communicable or transmissible

Chapter 1: Certain infectious and parasitic diseases · A00-A09 Intestinal infectious diseases (A00-A09)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.