2024 ICD-10-CM Diagnosis Code A78

Q fever

  • A78 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM A78 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A78 – other international versions of ICD-10 A78 may differ.

Applicable To

  • Infection due to Coxiella burnetii
  • Nine Mile fever
  • Quadrilateral fever

The following code(s) above A78 contain annotation back-references

 that may be applicable to A78:

  • A00-B99  Certain infectious and parasitic diseases

Clinical Information

  • A bacterial infection caused by coxiella burnetii. It is transmitted to humans by the inhalation of infected air particles or contact with fluids and feces of infected animals. Signs and symptoms include the abrupt onset of fever, headache, myalgias, and weakness.
  • Acute infectious disease caused by coxiella burnetii; characterized by a sudden onset of fever,headache, malaise, and weakness; in humans, it is commonly contracted by inhalation of infected dusts derived from infected domestic animals.
  • An acute infectious disease caused by coxiella burnetii. It is characterized by a sudden onset of fever; headache; malaise; and weakness. In humans, it is commonly contracted by inhalation of infected dusts derived from infected domestic animals (animals, domestic).

ICD-10-CM A78 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 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 A78 to ICD-9-CMCode 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
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Code annotations containing back-references to A78:

Diagnosis Index entries containing back-references to A78: