A87.8 Other viral meningitis

Name of the Condition

• Other viral meningitis

Summary

Other viral meningitis is an inflammation of the meninges, the protective membranes covering the brain and spinal cord, caused by viral infections other than enteroviruses or adenoviruses. It is typically less severe than bacterial meningitis and often resolves without specific antiviral treatment. The condition presents with symptoms such as headache, fever, and neck stiffness, though outcomes are generally favorable with supportive care.

Causes

Other viral meningitis is caused by various viruses, including herpesviruses, mumps, measles, influenza, and others. These viruses are transmitted through respiratory droplets, fecal-oral routes, or contact with contaminated surfaces. The infection spreads when individuals come into contact with infected secretions, fluids, or airborne particles from an infected person.

Risk Factors

• Close contact with individuals who have viral infections (e.g., herpesviruses, mumps, measles).
• Weakened immune systems, including those with immunosuppressive conditions or therapies.
• Age, with infants and young children being more susceptible.
• Poor hygiene practices, such as inadequate handwashing.
• Living in or traveling to areas with high rates of viral transmission.

Symptoms

• Sudden onset of fever and chills.
• Severe headache, often worse with movement.
• Stiff neck and sensitivity to light (photophobia).
• Nausea and vomiting.
• Altered mental status or confusion.
• Fatigue or drowsiness.

Diagnosis

Diagnosis involves a combination of clinical evaluation, cerebrospinal fluid (CSF) analysis, and viral testing. CSF may show elevated white blood cells, normal or slightly elevated protein, and normal glucose levels. Polymerase chain reaction (PCR) testing or viral cultures of CSF, blood, or other specimens help identify the specific virus. Imaging studies like MRI or CT scans may be used to rule out other conditions.

Treatment Options

Treatment is primarily supportive, focusing on relieving symptoms and preventing complications. This includes rest, hydration, and over-the-counter pain relievers for fever or headache. Antiviral medications may be used if a specific virus (e.g., herpesvirus) is identified. Hospitalization may be necessary for severe cases or to monitor for complications.

Prognosis and Follow-Up

Prognosis is generally favorable, with most individuals recovering fully within 1-2 weeks. Follow-up care may include monitoring for persistent symptoms, such as headaches or fatigue, and ensuring complete resolution of the infection. Rarely, long-term complications like hearing loss or cognitive issues may occur.

Complications

• Seizures or neurological deficits.
• Hearing loss or vision problems.
• Persistent headaches or fatigue.
• Rarely, life-threatening complications like brain swelling (edema) or hydrocephalus.

Lifestyle & Prevention

• Practice good hygiene, including frequent handwashing.
• Avoid close contact with individuals showing signs of viral infections.
• Stay up-to-date with vaccinations (e.g., measles, mumps, influenza).
• Maintain a healthy immune system through balanced nutrition and adequate rest.

When to Seek Professional Help

Seek immediate medical attention if experiencing severe headache, neck stiffness, fever, confusion, or sensitivity to light. These symptoms may indicate meningitis and require prompt evaluation to rule out bacterial causes or other serious conditions.

Tips for Medical Coders

When coding for other viral meningitis (A87.8), ensure documentation specifies the causative virus (e.g., herpesvirus, mumps) if known, as this may impact coding specificity. Verify that the diagnosis aligns with clinical findings and exclude bacterial or fungal meningitis to avoid miscoding. Document any relevant tests (e.g., PCR, CSF analysis) to support the viral etiology.