Acute necrotizing hemorrhagic encephalopathy, unspecified
ICD-10 G04.30 is a billable code used to indicate a diagnosis of acute necrotizing hemorrhagic encephalopathy, unspecified.
Acute necrotizing hemorrhagic encephalopathy (ANHE) is a rare and severe neurological condition characterized by rapid onset of encephalopathy, often following a viral infection. It is marked by necrosis and hemorrhage in the brain, leading to significant neurological deficits. Patients typically present with symptoms such as altered mental status, seizures, and focal neurological deficits. The condition is often associated with viral infections, particularly influenza and other respiratory viruses, and can occur in both children and adults. Diagnosis is primarily clinical, supported by neuroimaging findings that reveal bilateral thalamic lesions and other areas of hemorrhage and necrosis. The acute nature of the condition necessitates prompt medical intervention, including supportive care and management of complications. Prognosis can vary widely, with some patients experiencing full recovery while others may suffer long-term neurological impairment or death. Given its acute presentation and potential for rapid deterioration, timely recognition and coding of ANHE are crucial for appropriate patient management and resource allocation.
Detailed neurological examination findings, imaging results, and treatment plans.
Patients presenting with acute neurological symptoms following a viral illness.
Ensure that all neurological deficits and imaging findings are documented to support the diagnosis.
History of recent infections, laboratory results, and response to treatment.
Patients with acute encephalopathy following a documented viral infection.
Document the infectious agent when known, as it may influence coding and treatment.
Used to evaluate for hemorrhagic changes in patients with suspected encephalopathy.
Document the indication for the CT scan and any neurological findings.
Neurologists should ensure that imaging findings correlate with clinical symptoms.
Common causes include viral infections, particularly influenza and other respiratory viruses. It can also occur following other infections or in association with autoimmune conditions.
