ICD-9 Diagnosis Code 482.84

Legionnaires' disease

Diagnosis Code 482.84

ICD-9: 482.84
Short Description: Legionnaires' disease
Long Description: Pneumonia due to Legionnaires' disease
This is the 2014 version of the ICD-9-CM diagnosis code 482.84

Code Classification
  • Diseases of the respiratory system (460–519)
    • Pneumonia and influenza (480-488)
      • 482 Other bacterial pneumonia

Information for Medical Professionals

Convert to ICD-10 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
  • A48.1 - Legionnaires' disease

Index of Diseases and Injuries
References found for the code 482.84 in the Index of Diseases and Injuries:

Information for Patients

Legionnaires' Disease

Also called: Legionellosis

Legionnaires' disease is a type of pneumonia caused by bacteria. You usually get it by breathing in mist from water that contains the bacteria. The mist may come from hot tubs, showers, or air-conditioning units for large buildings. The bacteria don't spread from person to person.

Symptoms of Legionnaires' disease include high fever, chills, a cough, and sometimes muscle aches and headaches. Other types of pneumonia have similar symptoms. You will probably need a chest x-ray to diagnose the pneumonia. Lab tests can detect the specific bacteria that cause Legionnaires' disease.

Most people exposed to the bacteria do not become sick. You are more likely to get sick if you

  • Are older than 50
  • Smoke
  • Have a chronic lung disease
  • Have a weak immune system

Legionnaires' disease is serious and can be life-threatening. However, most people recover with antibiotic treatment.

Centers for Disease Control and Prevention

  • Legionnaire's disease

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