G04.02
Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
Clinical Classification Guidelines
Use Additional Code
- code to identify the vaccine (T50.A-, T50.B-, T50.Z-)
Inclusion Terms
- Encephalitis, post immunization
- Encephalomyelitis, post immunization
Medical Intelligence & Overview
Postimmunization acute disseminated encephalitis, myelitis, and encephalomyelitis are rare neurological conditions that can occur after receiving certain vaccinations. These conditions involve inflammation of the brain and spinal cord tissues and can lead to various neurological symptoms. Recognized under the ICD-10 code G04.02, these reactions are considered uncommon but serious responses to immunizations, requiring prompt medical attention and management.
Causes & Symptoms
Clinical Causes: Recent vaccination, particularly with certain live or inactivated vaccines Immune system overreaction leading to inflammation in the central nervous system
Key Symptoms: Headache and neck stiffness Altered mental state, confusion, or agitation Seizures Weakness or paralysis in limbs Sensory disturbances such as numbness or tingling Fever and malaise Loss of coordination or balance Visual disturbances
Diagnostic & Treatment
Diagnosis Path: Neurological examination to assess motor and sensory functions Magnetic resonance imaging (MRI) scans to detect inflammation in the brain and spinal cord Lumbar puncture to analyze cerebrospinal fluid (CSF) for signs of inflammation or infection Blood tests to rule out other causes and confirm immune response
Treatment Protocols: High-dose corticosteroids to decrease brain and spinal cord inflammation Immunoglobulin therapy or plasmapheresis in severe cases Supportive care such as physical therapy to assist recovery of neurological functions Managing symptoms with anticonvulsants or pain relievers as needed
Clinical Advice & FAQs
Billing Guidance
Is G04.02 a billable ICD-10 code?
Yes, G04.02 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report G04.02?
Clinical documentation must specify the nature of Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis and any associated comorbidities for accurate reporting.
Cite this Clinical Reference