Tularemia (A21)
The ICD-10 code for tularemia (A21) covers a range of bacterial infections caused by the Francisella bacterium, affecting various parts of the body. These codes specify the form of tularemia diagnosed, helping guide treatment and reporting.
This section includes codes for specific types like ulceroglandular (A21.0), which involves skin ulcers and swollen glands, also known as glandular tularemia. Oculoglandular tularemia (A21.1) affects the eye and nearby lymph nodes, sometimes called bacterial corneal ulcer. Pulmonary tularemia (A21.2) relates to lung infection similar to pneumonia. There are also codes for gastrointestinal tularemia (A21.3), generalized tularemia (A21.7) which is widespread throughout the body (also called typhoidal tularemia), and other or unspecified forms (A21.8, A21.9). Recognizing synonyms like glandular tularemia or infection caused by Francisella clarifies which code applies, supporting accurate diagnosis and documentation for healthcare providers and coders.
Instructional Notations
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
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Francisella tularensis
The etiologic agent of TULAREMIA in man and other warm-blooded animals.
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.
