Legionnaires' disease
ICD-10 A48.5 is a billable code used to indicate a diagnosis of legionnaires' disease.
Legionnaires' disease is a severe form of pneumonia caused by the bacterium Legionella pneumophila. It is primarily contracted through inhalation of aerosolized water droplets containing the bacteria, often from sources such as air conditioning systems, hot tubs, or plumbing systems. The disease is characterized by symptoms including high fever, chills, cough, muscle aches, and headaches, which can progress to respiratory failure in severe cases. Immunocompromised patients, such as those with chronic lung disease, diabetes, or those undergoing immunosuppressive therapy, are at a higher risk for developing Legionnaires' disease. Diagnosis can be challenging due to the nonspecific nature of the symptoms and the need for specific laboratory tests, such as urine antigen tests or culture of respiratory secretions, to confirm the presence of Legionella. Early recognition and treatment with appropriate antibiotics are crucial for improving outcomes, particularly in vulnerable populations.
Detailed history of exposure, laboratory test results, and clinical symptoms.
Patients presenting with pneumonia symptoms and a history of travel or exposure to potential sources of Legionella.
Consideration of co-morbid conditions that may complicate the diagnosis and treatment.
Comprehensive pulmonary function tests and imaging studies to assess the extent of pneumonia.
Patients with chronic lung disease presenting with acute exacerbations and pneumonia.
Documentation of baseline lung function and any changes post-treatment.
Used when testing for Legionella in patients with pneumonia symptoms.
Document the clinical indication for testing and results.
Infectious disease specialists should ensure comprehensive documentation of exposure history.
Common symptoms include high fever, chills, cough, muscle aches, and headaches. Severe cases may lead to respiratory failure.
Diagnosis is typically confirmed through urine antigen tests or culture of respiratory secretions.
Individuals who are immunocompromised, elderly, or have chronic lung conditions are at higher risk.
