A74.0: Scrub typhus
ICD-10 A74.0 is a billable code used to indicate a diagnosis of a74.0: scrub typhus.
Scrub typhus is an acute febrile illness caused by the bacterium Orientia tsutsugamushi, transmitted through the bite of infected chiggers (larval mites). The disease is endemic in rural areas of Southeast Asia, the Pacific Islands, and parts of South America. Clinically, scrub typhus presents with symptoms such as fever, headache, myalgia, and a characteristic eschar at the site of the chigger bite. Patients may also experience respiratory symptoms, including cough and difficulty breathing, as well as gastrointestinal manifestations like nausea and abdominal pain. Severe cases can lead to complications such as pneumonia, renal failure, and meningoencephalitis. Diagnosis is primarily based on clinical presentation and serological tests, as well as PCR for definitive identification. Treatment typically involves antibiotics, with doxycycline being the first-line therapy. Early recognition and management are crucial to prevent severe outcomes.
Detailed clinical notes on symptoms, exposure history, and laboratory results.
Patients presenting with fever and rash after travel to endemic areas.
Ensure documentation includes travel history and specific lab tests performed.
Comprehensive assessment of presenting symptoms and immediate interventions.
Patients with acute febrile illness presenting to the ER.
Document any differential diagnoses considered and tests ordered.
Used when bacterial culture is performed to confirm scrub typhus.
Document the source of the culture and clinical indications.
Infectious disease specialists may require additional lab tests.
Common symptoms include fever, headache, myalgia, and an eschar at the site of the chigger bite. Respiratory symptoms may also occur.
Diagnosis is based on clinical presentation, travel history, and laboratory tests such as serology or PCR.
