Legionnaires' disease
ICD-10 A49.1 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 acquired through inhalation of aerosolized water droplets containing the bacteria, often from contaminated water sources such as cooling towers, hot tubs, and plumbing systems. The disease is characterized by symptoms such as high fever, chills, cough, muscle aches, and headaches, which can progress to respiratory failure in severe cases. Immunocompromised patients, including those with chronic lung disease, cancer, or those on immunosuppressive therapy, are at a higher risk for developing Legionnaires' disease. Diagnosis can be challenging due to the nonspecific nature of symptoms and the need for specific laboratory tests, such as urine antigen tests or culture of respiratory secretions. Early recognition and treatment with appropriate antibiotics are crucial for improving outcomes, particularly in vulnerable populations.
Detailed patient history, including exposure sources and immunocompromised status.
Patients presenting with pneumonia symptoms, especially those with recent travel or exposure to water systems.
Ensure laboratory results are clearly documented to support the diagnosis.
Comprehensive respiratory assessment and history of underlying lung conditions.
Patients with chronic lung disease presenting with acute respiratory distress.
Document any prior lung conditions that may complicate the diagnosis.
Used when testing for Legionella in patients with pneumonia symptoms.
Document the reason for testing and any relevant clinical findings.
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.
