Tularemia (A21) ICD-10-CM
The A21 code range covers tularemia with 8 ICD-10-CM diagnosis codes. 7 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.
- deer-fly fever
- infection due to Francisella tularensis
- rabbit fever
Codes in the A21 Range 8 codes · 7 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A21 range.
Tularemia
A plague-like disease of rodents, transmissible to man. It is caused by FRANCISELLA TULARENSIS and is characterized by fever, chills, headache, backache, and weakness.
About the A21 Code Range
Tularemia is a bacterial disease of rodents that can spread to people. It can cause fever, chills, headache, backache, and weakness.
The subdivisions distinguish forms involving ulcers and glands (A21.0), eyes and glands (A21.1), lungs (A21.2), or the digestive tract (A21.3). Separate codes identify generalized tularemia (A21.7), other forms (A21.8), and unspecified tularemia (A21.9).
Questions About This Page
How many billable codes are in the A21 range?
Of the 8 codes in this range, 7 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 A21 range classify?
The range classifies tularemia. 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.
