2020 ICD-10-CM Diagnosis Code A23.1

Brucellosis due to Brucella abortus

    2016 2017 2018 2019 2020 Billable/Specific Code
  • A23.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM A23.1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of A23.1 - other international versions of ICD-10 A23.1 may differ.
The following code(s) above A23.1 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 A23.1:
  • A00-B99
    2020 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
  • A23
    ICD-10-CM Diagnosis Code A23

    Brucellosis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • Malta fever
    • Mediterranean fever
    • undulant fever
    Brucellosis
Approximate Synonyms
  • Brucella abortus infection
  • Infection due to brucella abortus
Clinical Information
  • A disease of cattle caused by bacteria of the genus brucella leading to abortion in late pregnancy. Brucella abortus is the primary infective agent.
ICD-10-CM A23.1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 867 Other infectious and parasitic diseases diagnoses with mcc
  • 868 Other infectious and parasitic diseases diagnoses with cc
  • 869 Other infectious and parasitic diseases diagnoses without cc/mcc

Convert A23.1 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

Diagnosis Index entries containing back-references to A23.1:
  • Abortus fever A23.1
  • Bacillus - see also Infection, bacillus
    • abortus infection A23.1
  • Bang's disease A23.1 (brucella abortus)
  • Brucellosis (infection) A23.9
    ICD-10-CM Diagnosis Code A23.9

    Brucellosis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • abortus A23.1
  • Disease, diseased - see also Syndrome
    • Bang's A23.1 (brucella abortus)
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
    ICD-10-CM Diagnosis Code R50.9

    Fever, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Fever NOS
    • Fever of unknown origin [FUO]
    • Fever with chills
    • Fever with rigors
    • Hyperpyrexia NOS
    • Persistent fever
    • Pyrexia NOS
    • abortus A23.1
  • Infection, infected, infective (opportunistic) B99.9
    ICD-10-CM Diagnosis Code B99.9

    Unspecified infectious disease

      2016 2017 2018 2019 2020 Billable/Specific Code
    • Bacillus A49.9
      ICD-10-CM Diagnosis Code A49.9

      Bacterial infection, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Type 1 Excludes
      • abortus A23.1
    • Brucella A23.9
      ICD-10-CM Diagnosis Code A23.9

      Brucellosis, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • abortus A23.1

ICD-10-CM Codes Adjacent To A23.1
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
A23.9 Brucellosis, unspecified
A24 Glanders and melioidosis
A24.0 Glanders
A24.1 Acute and fulminating melioidosis
A24.2 Subacute and chronic melioidosis
A24.3 Other melioidosis
A24.9 Melioidosis, unspecified

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