Acute disseminated encephalitis and encephalomyelitis, unspecified
ICD-10 G04.00 is a billable code used to indicate a diagnosis of acute disseminated encephalitis and encephalomyelitis, unspecified.
Acute disseminated encephalitis and encephalomyelitis (ADEM) is a rare neurological condition characterized by widespread inflammation of the brain and spinal cord. It often follows a viral infection, such as measles, mumps, or influenza, and can occur after vaccination. The condition is marked by symptoms such as fever, headache, confusion, seizures, and neurological deficits. Diagnosis typically involves MRI imaging, which may show lesions in the brain and spinal cord, and lumbar puncture to analyze cerebrospinal fluid (CSF) for inflammatory markers. Treatment usually includes corticosteroids to reduce inflammation and supportive care. The unspecified designation indicates that the specific cause of the encephalitis or encephalomyelitis has not been determined, which can complicate management and coding. Clinicians must be vigilant in monitoring for potential complications, including seizures and long-term neurological deficits.
Detailed neurological examination findings, imaging results, and treatment plans.
Patients presenting with acute neurological symptoms following a viral illness.
Ensure clarity in documentation regarding the onset and progression of symptoms.
History of recent infections, vaccination status, and laboratory results.
Patients with encephalitis following viral infections or vaccinations.
Document any infectious agents identified to support coding.
Used to evaluate for acute changes in patients with suspected encephalitis.
Document indications for imaging and findings.
Neurology specialists should ensure imaging correlates with clinical findings.
G04.00 is used when the cause of the encephalitis is unspecified, while G04.01 is used when a specific viral cause is identified.
