2021 ICD-10-CM Diagnosis Code A22.1

Pulmonary anthrax

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • A22.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM A22.1 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of A22.1 - other international versions of ICD-10 A22.1 may differ.
Applicable To
  • Inhalation anthrax
  • Ragpicker's disease
  • Woolsorter's disease
The following code(s) above A22.1 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 A22.1:
  • 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
  • A22
    ICD-10-CM Diagnosis Code A22

    Anthrax

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Includes
    • infection due to Bacillus anthracis
    Anthrax
Approximate Synonyms
  • Anthrax pneumonia
ICD-10-CM A22.1 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 177 Respiratory infections and inflammations with mcc
  • 178 Respiratory infections and inflammations with cc
  • 179 Respiratory infections and inflammations without cc/mcc

Convert A22.1 to ICD-9-CM

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
Code annotations containing back-references to A22.1:
  • Type 1 Excludes: J17
    ICD-10-CM Diagnosis Code J17

    Pneumonia in diseases classified elsewhere

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
    Code First
    • underlying disease, such as:
    • Q fever (A78)
    • rheumatic fever (I00)
    • schistosomiasis (B65.0-B65.9)
    Type 1 Excludes
    • candidial pneumonia (B37.1)
    • chlamydial pneumonia (J16.0)
    • gonorrheal pneumonia (A54.84)
    • histoplasmosis pneumonia (B39.0-B39.2)
    • measles pneumonia (B05.2)
    • nocardiosis pneumonia (A43.0)
    • pneumocystosis (B59)
    • pneumonia due to Pneumocystis carinii (B59)
    • pneumonia due to Pneumocystis jiroveci (B59)
    • pneumonia in actinomycosis (A42.0)
    • pneumonia in anthrax (A22.1)
    • pneumonia in ascariasis (B77.81)
    • pneumonia in aspergillosis (B44.0-B44.1)
    • pneumonia in coccidioidomycosis (B38.0-B38.2)
    • pneumonia in cytomegalovirus disease (B25.0)
    • pneumonia in toxoplasmosis (B58.3)
    • rubella pneumonia (B06.81)
    • salmonella pneumonia (A02.22)
    • spirochetal infection NEC with pneumonia (A69.8)
    • tularemia pneumonia (A21.2)
    • typhoid fever with pneumonia (A01.03)
    • varicella pneumonia (B01.2)
    • whooping cough with pneumonia (A37 with fifth-character 1)

Diagnosis Index entries containing back-references to A22.1:
  • Anthrax A22.9
    ICD-10-CM Diagnosis Code A22.9

    Anthrax, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • with pneumonia A22.1
    • inhalation A22.1
    • pulmonary A22.1
    • respiratory A22.1
  • Disease, diseased - see also Syndrome
    • ragpicker's or ragsorter's A22.1
    • woolsorter's A22.1
  • Inhalation
    • anthrax A22.1
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) J18.9
    ICD-10-CM Diagnosis Code J18.9

    Pneumonia, unspecified organism

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • in (due to)
      • anthrax A22.1
      • Bacillus anthracis A22.1
    • anthrax A22.1
  • Ragpicker's disease A22.1
  • Ragsorter's disease A22.1
  • Woolsorter's disease A22.1

ICD-10-CM Codes Adjacent To A22.1
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
A23.3 Brucellosis due to Brucella canis
A23.8 Other brucellosis

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