1. ICD-10-CM Codes
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2. A00-B99
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3. A20-A28
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4. A23-
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5. 2023 ICD-10-CM Diagnosis Code A23.1

2023 ICD-10-CM Diagnosis Code A23.1

Brucellosis due to Brucella abortus

2016 2017 2018 2019 2020 2021 2022 2023 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 2023 edition of ICD-10-CM A23.1 became effective on October 1, 2022.
• This is the American ICD-10-CM version of A23.1 - other international versions of ICD-10 A23.1 may differ.

• Brucella abortus infection
• Infection due to brucella abortus

• A disease of cattle caused by bacteria of the genus brucella leading to abortion in late pregnancy. Brucella abortus is the primary infective agent.

• 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

• 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
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change

• 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 2021 2022 2023 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 2021 2022 2023 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 2021 2022 2023 Billable/Specific Code
  • Bacillus A49.9
    ICD-10-CM Diagnosis Code A49.9

    Bacterial infection, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Type 1 Excludes

    • bacteremia NOS (R78.81)
    • abortus A23.1
  • Brucella A23.9
    ICD-10-CM Diagnosis Code A23.9

    Brucellosis, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • abortus A23.1

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