B08.20
Exanthema subitum [sixth disease], unspecified
Clinical Classification Guidelines
Inclusion Terms
- Roseola infantum, unspecified
Medical Intelligence & Overview
Exanthema subitum, commonly known as sixth disease or roseola infantum, is a contagious viral infection that primarily affects young children. It is characterized by a sudden high fever followed by a distinctive skin rash. Although generally mild, it requires proper recognition to distinguish it from other childhood illnesses. This guide provides a comprehensive overview of sixth disease, including its causes, symptoms, diagnosis, and general approaches to management.
Causes & Symptoms
Clinical Causes: The illness is caused by the human herpesvirus 6 (HHV-6) and occasionally by human herpesvirus 7 (HHV-7). It spreads mainly through respiratory secretions, such as saliva, nasal mucus, or pharyngeal secretions. Close contact with an infected person increases the risk of transmission. The infection is most common in children between 6 months and 2 years of age. Infection often occurs in outbreaks in childcare settings.
Key Symptoms: Sudden onset of high fever, often exceeding 102°F (39°C) Fever typically lasts for 3 to 5 days Post-fever appearance of a rash—tiny pink spots that may spread across the trunk, neck, and limbs The rash is usually non-itchy and may fade within a few hours to days Irritability or fussiness in young children Less common symptoms include: swollen lymph nodes, mild respiratory symptoms, mild diarrhea, or irritability
Diagnostic & Treatment
Diagnosis Path: Diagnosis of exanthema subitum is primarily clinical, based on the characteristic pattern of fever followed by rash. Laboratory tests are generally not necessary but may include - Serological assays detecting herpesvirus antibodies - Polymerase chain reaction (PCR) testing to identify viral DNA in blood or tissue samples. However, most cases are diagnosed based on history and physical examination alone, especially when the rash appears after a period of high fever.
Treatment Protocols: There is no specific antiviral treatment for sixth disease. Management focuses on alleviating symptoms and supporting recovery: - Use of acetaminophen or ibuprofen to reduce fever and discomfort - Ensuring adequate hydration - Monitoring for any complications, although serious issues are rare - Encouraging rest and comfort measures While the illness is usually self-limited, prompt care and symptom management help reduce discomfort and prevent dehydration. Antibiotics are not effective since the cause is viral. In most cases, affected children recover fully without medical intervention, but parents should consult healthcare providers if symptoms worsen or if there are signs of dehydration or other complications.
Clinical Advice & FAQs
Billing Guidance
Is B08.20 a billable ICD-10 code?
Yes, B08.20 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report B08.20?
Clinical documentation must specify the nature of Exanthema subitum [sixth disease], unspecified and any associated comorbidities for accurate reporting.
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