2021 ICD-10-CM Diagnosis Code A22

Anthrax

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • A22 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM A22 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of A22 - other international versions of ICD-10 A22 may differ.
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • infection due to Bacillus anthracis
The following code(s) above A22 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to A22:
  • A00-B99
    2021 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
Clinical Information
  • 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.
  • An infection caused by bacillus anthracis bacteria. It may affect the lungs, gastrointestinal tract, or skin. Patients with lung infection present with fever, headaches, cough, chest pain and shortness of breath. Patients with gastrointestinal infection present with nausea, vomiting and bloody diarrhea. Patients with skin infection develop blisters and ulcers.
  • Anthrax is a disease caused by bacillus anthracis, a microbe that lives in soil. Many people know about it from the 2001 bioterror attacks. In the attacks, someone purposely spread anthrax through the United States Mail. This killed five people and made 22 sick. Anthrax affects farm animals more often than people. But it can cause three forms of disease in people. They are:
    • cutaneous, which affects the skin. People with cuts or open sores can get it if they touch the bacteria.
    • inhalation, which affects the lungs. You can get this if you breathe in spores of the bacteria.
    • gastrointestinal, which affects the digestive system. You can get it by eating infected meat.
    antibiotics often cure anthrax if it is diagnosed early. But many people don't know they have anthrax until it is too late to treat. A vaccine to prevent anthrax is available for people in the military and others at high risk.
  • Infectious bacterial zoonotic disease usually acquired by ingestion of bacillus anthracis; marked by hemorrhage and serous effusions in the organs and cavities and symptoms of extreme prostration.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To A22
A20.8 Other forms of plague
A20.9 Plague, unspecified
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
A22 Anthrax
A22.0 Cutaneous anthrax
A22.1 Pulmonary anthrax
A22.2 Gastrointestinal anthrax
A22.7 Anthrax sepsis
A22.8 Other forms of anthrax
A22.9 Anthrax, unspecified
A23 Brucellosis
A23.0 Brucellosis due to Brucella melitensis
A23.1 Brucellosis due to Brucella abortus
A23.2 Brucellosis due to Brucella suis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.