Shigellosis (A03) ICD-10-CM
The A03 code range covers shigellosis with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the A03 Range 7 codes · 6 billable
About the A03 Code Range
Shigellosis ICD-10 codes cover infections caused by different species of the Shigella bacteria, which lead to intestinal illness. These codes identify the specific bacterial cause, helping healthcare professionals document and treat varied forms of shigellosis effectively.
The ICD-10 code A03 corresponds broadly to shigellosis. More detailed codes like A03.0 to A03.3 specify infections by particular Shigella species: Shigella dysenteriae (also called Shigella dysenteriae colitis or Group A Shigella), Shigella flexneri (Group B Shigella), Shigella boydii (Group C Shigella), and Shigella sonnei (Group D Shigella). These details help distinguish cases for accurate diagnosis and targeted treatment. Codes A03.8 and A03.9 cover other or unspecified types of shigellosis, including synonyms such as bacillary dysentery and bacterial dysentery. Using the correct ICD-10 code for shigellosis ensures precise communication about infections caused by different Shigella bacteria, aiding in public health tracking and patient care management.
Questions About This Page
How many billable codes are in the A03 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the A03 range classify?
The range classifies shigellosis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
