A21.0 is a billable and specific ICD-10-CM code. Accurate documentation of A21.0 facilitates proper diagnosis, effective management, and correct reimbursement.
This guideline will provide the use, official coding guidelines, and historical background of A21.0.
What is the ICD-10-CM Diagnosis Code for Ulceroglandular tularemia?
The ICD-10-CM diagnosis code for Ulceroglandular tularemia is A21.0.
Tularemia is a rare but serious infectious disease caused by the bacterium Francisella tularensis. It is often transmitted to humans through tick or deer fly bites, contact with infected animals, or contaminated food, water, or air.
Ulceroglandular tularemia is the most common form of tularemia. It usually occurs after a tick or fly bite, or contact with an infected animal. The infection begins at the site of entry, leading to the formation of a painful skin ulcer.
Symptoms include sudden fever, chills, fatigue, and a painful skin ulcer at the site of infection. Swollen and tender lymph nodes near the ulcer are also common.
The cause is the Francisella tularensis bacteria entering through cuts, wounds, or tiny breaks in your skin. Diagnosis is confirmed through blood tests or cultures.
Treatment includes antibiotics like streptomycin or doxycycline. Early treatment leads to full recovery and prevents complications.
Proper documentation using A21.0 ensures patients receive appropriate care and enables accurate healthcare reimbursement.
History Background of ICD-10-CM Diagnosis A21.0
The ICD-9-CM system, first introduced in 1979, provided the initial framework for coding diseases and health-related conditions in the United States.
The ICD-9-CM diagnosis code for Ulceroglandular tularemia was 021.0.This coding remained consistent from 1979 to 2015.
While the ICD-9-CM system offered a basic approach to disease classification, modern healthcare needs more detail and specificity.
To address this, the ICD-10-CM system was launched in 2015, introducing a more comprehensive and accurate coding structure.
The transition from ICD-9-CM to ICD-10-CM significantly improved the ability to document and analyze conditions such as Ulceroglandular tularemia.
The 2025 edition of ICD-10-CM A21.0 became effective on October 1, 2024.
| Year | ICD-10-CM Code | Description |
| 2020 | A21.0 | No Change |
| 2021 | A21.0 | No Change |
| 2022 | A21.0 | No Change |
| 2023 | A21.0 | No Change |
| 2024 | A21.0 | No Change |
| 2025 | A21.0 | No Change |
Other ICD-10-CM Diagnosis Codes in A21
ICD-10-CM code A21 | Tularemia has following sub categories including A21.0 :
- A21 Tularemia.
- A21.0 Ulceroglandular tularemia
- A21.1 Oculoglandular tularemia
- A21.2 Pulmonary tularemia
- A21.3 Gastrointestinal tularemia
- A21.7 Generalized tularemia
- A21.8 Other forms of tularemia
- A21.9 Tularemia, unspecified
Final Thoughts
Proper coding of A21.0 is essential for diagnosing and managing Ulceroglandular tularemia. A clear understanding of its History, and correct usage enhances medical documentation and ensures effective treatment, patient care, supports healthcare planning, and guarantees proper reimbursement for medical services.
