A68.1
Tick-borne relapsing fever
Clinical Classification Guidelines
Inclusion Terms
- Relapsing fever due to any Borrelia species other than Borrelia recurrentis
Medical Intelligence & Overview
Tick-borne relapsing fever (TBRF) is a bacterial infection transmitted by tick bites, caused by various Borrelia species, excluding Borrelia recurrentis. This illness is characterized by recurring episodes of fever and other flu-like symptoms. It predominantly affects individuals who spend time in areas where infected ticks are common, especially in rural or wilderness settings. Recognizing the signs, causes, and available management options can help in timely diagnosis and treatment.
Causes & Symptoms
Clinical Causes: Infection with Borrelia bacteria, transmitted through the bite of infected soft ticks, primarily Ornithodoros species. Exposure to tick-infested environments such as forests, cabins, or rural regions. Living or traveling in areas with endemic tick populations carrying Borrelia bacteria.
Key Symptoms: High fever that often appears suddenly and can reach 102-105°F (39-40.6°C). Recurring episodes of fever with periods of remission, typically lasting for days to weeks. Chills and sweating during febrile episodes. Headache, muscle aches, and fatigue. Nausea and sometimes vomiting. Joint or muscle pain. Possible rash or skin irritation at the site of tick bite. In some cases, neurological symptoms such as dizziness or lightheadedness may occur during relapses.
Diagnostic & Treatment
Diagnosis Path: Microscopic identification of Borrelia bacteria in blood smears, especially during febrile episodes. Serologic tests to detect antibodies against Borrelia species. Polymerase chain reaction (PCR) testing to identify bacterial DNA in blood samples. Exclusion of other febrile illnesses with similar symptoms.
Treatment Protocols: Doxycycline as a first-line therapy for most adults and children over the age of 8. Erythromycin or penicillin for patients who are allergic to doxycycline. Managing symptoms with supportive care such as hydration, rest, and antipyretics to reduce fever. Monitoring for potential relapses and ensuring complete antibiotic courses to prevent recurrence.
Clinical Advice & FAQs
Billing Guidance
Is A68.1 a billable ICD-10 code?
Yes, A68.1 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report A68.1?
Clinical documentation must specify the nature of Tick-borne relapsing fever and any associated comorbidities for accurate reporting.
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