Anthrax (A22) ICD-10-CM
The A22 code range covers anthrax with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- infection due to Bacillus anthracis
Codes in the A22 Range 7 codes · 6 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A22 range.
Anthrax
An acute infection caused by the spore-forming bacteria BACILLUS ANTHRACIS. It commonly affects hoofed animals such as sheep and goats. Infection in humans often involves the skin (cutaneous anthrax), the lungs (inhalation anthrax), or the gastrointestinal tract. Anthrax is not contagious and can be treated with antibiotics.
About the A22 Code Range
Anthrax is an acute infection caused by spore-forming Bacillus anthracis bacteria. It commonly affects hoofed animals such as sheep and goats.
Within the zoonotic bacterial diseases block, A22 separates anthrax by affected body site and form. A22.0 identifies skin anthrax, A22.1 lung anthrax, and A22.2 gastrointestinal anthrax. A22.7 identifies anthrax sepsis; A22.8 identifies other forms, and A22.9 leaves the form unspecified.
Questions About This Page
How many billable codes are in the A22 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the A22 range classify?
The range classifies anthrax. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
