Diagnosis Code


Code Information

Diagnosis Code: A78

Short Description: Q fever

Long Description: Q fever

The code A78 is VALID for claim submission

Code Classification:

  • Certain infectious and parasitic diseases (A00–B99)
    • Rickettsioses (A75-A79)
      • Q fever (A78)
        • A78 Q fever

Code Version: 2022 ICD-10-CM


  • Acute Q fever
  • Aseptic meningitis
  • Bacterial hepatitis
  • Bacterial osteomyelitis
  • Chronic Q fever
  • Encephalomyelitis caused by bacterium
  • Encephalomyelitis caused by Coxiella burnetii
  • Infection caused by Coxiella
  • Infection causing encephalomyelitis
  • Myelitis caused by bacterium
  • Pneumonia in Q fever
  • Q fever
  • Q fever aseptic meningitis
  • Q fever encephalitis
  • Q fever endocarditis
  • Q fever hepatitis
  • Q fever myocarditis
  • Q fever osteomyelitis
  • Q fever pericarditis

Diagnostic Related Group(s)

The code A78 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Other Infectious And Parasitic Diseases Diagnoses With Mcc (867)
  • Other Infectious And Parasitic Diseases Diagnoses With Cc (868)
  • Other Infectious And Parasitic Diseases Diagnoses Without Cc/mcc (869)

References to Index of Diseases and Injuries

The code A78 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Infection due to Coxiella burnetii
    • Nine Mile fever
    • Quadrilateral fever

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
A78 Right Arrow 083.0 Q fever

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description

This page was last updated on: 10/1/2023