B27.9
Infectious mononucleosis, unspecified
Clinical Classification Guidelines
Medical Intelligence & Overview
Infectious mononucleosis, commonly known as mono or the 'kissing disease,' is a contagious illness caused primarily by the Epstein-Barr Virus (EBV). The ICD-10 code B27.9 refers to cases where the infection's specific manifestation cannot be further specified. Mono often affects teenagers and young adults, leading to symptoms like fatigue, sore throat, and swollen lymph nodes. While generally not severe, understanding its causes, symptoms, diagnosis, and management options can help in better awareness and care.
Causes & Symptoms
Clinical Causes: Primary cause is infection with Epstein-Barr Virus (EBV). Transmission mainly occurs through saliva, but can also spread through close contact with an infected person via coughs, sneezes, or sharing utensils and drinks. Less commonly, other viruses like cytomegalovirus (CMV) can cause mononucleosis-like symptoms. Contagious period can last from the infectious stage to several weeks after symptoms resolve. Individuals are most contagious early in the illness when symptoms are most severe.
Key Symptoms: Sudden onset of fever Sore throat, often severe with white patches on the tonsils Swollen lymph nodes in the neck and armpits Fatigue and weakness Muscle aches Headache Loss of appetite Skin rash in some cases Enlargement of the spleen or liver in certain instances Sometimes, ear sensitivity or mild jaundice
Diagnostic & Treatment
Diagnosis Path: Diagnosis generally involves a combination of physical examination and medical tests. Healthcare providers may perform the following:
Treatment Protocols: There is no specific antiviral treatment for infectious mononucleosis. Management focuses on relieving symptoms and supportive care:
Clinical Advice & FAQs
Billing Guidance
Is B27.9 a billable ICD-10 code?
Yes, B27.9 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report B27.9?
Clinical documentation must specify the nature of Infectious mononucleosis, unspecified and any associated comorbidities for accurate reporting.
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