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A03 Shigellosis

ICD-10-CM category A03 sits in Chapter 1 (Certain infectious and parasitic diseases, A00-B99). It contains 6 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Billable codes in A03

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

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