1. ICD-10-CM Codes
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2. A00-B99
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3. A75-A79
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4. A77-
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5. 2023 ICD-10-CM Diagnosis Code A77.1

2023 ICD-10-CM Diagnosis Code A77.1

Spotted fever due to Rickettsia conorii

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

• A77.1 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 A77.1 became effective on October 1, 2022.
• This is the American ICD-10-CM version of A77.1 - other international versions of ICD-10 A77.1 may differ.

• Boutonneuse fever

• A febrile disease of the mediterranean area, the crimea, africa, and india, caused by infection with rickettsia conorii.

• 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 A77.1 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

• Disease, diseased - see also Syndrome
  • Conor and Bruch's A77.1 (boutonneuse fever)
• 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
  • Mediterranean A23.9
    - see also Brucellosis
    ICD-10-CM Diagnosis Code A23.9

    Brucellosis, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • tick A77.1
  • spotted A77.9
    ICD-10-CM Diagnosis Code A77.9

    Spotted fever, unspecified

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

    Applicable To

    • Tick-borne typhus NOS
    • due to Rickettsia
      • conorii A77.1
  • tick
    • Mediterranean A77.1
  • boutonneuse A77.1
  • Kenya A77.1 (tick)
  • Marseilles A77.1
• 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
  • typhus A75.9
    ICD-10-CM Diagnosis Code A75.9

    Typhus fever, unspecified

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

    Applicable To

    • Typhus (fever) NOS
    • tick-borne A77.9
      ICD-10-CM Diagnosis Code A77.9

      Spotted fever, unspecified

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

      Applicable To

      • Tick-borne typhus NOS
      • African A77.1
• Kenya fever A77.1
• Marseilles fever A77.1
• Mediterranean
  • fever - see Brucellosis
    • tick A77.1
  • tick fever A77.1
• Typhus (fever) A75.9
  ICD-10-CM Diagnosis Code A75.9

  Typhus fever, unspecified

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

  Applicable To

  • Typhus (fever) NOS
  • African tick A77.1
  • India tick A77.1
  • Kenya A77.1 (tick)

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