G04.81

What This Code Means

This code describes inflammation of the brain and spinal cord that doesn't fit into other specific encephalitis categories. It's used when a patient has brain swelling and inflammation along with spinal cord involvement, but the cause doesn't match more specific diagnostic codes.

Coding Tips

• •Use this code only after ruling out more specific encephalitis types (viral, bacterial, autoimmune); always investigate and document the underlying cause if identifiable
• •This is a 'catch-all' code, so ensure the clinical documentation clearly describes both encephalitis and myelitis components before assigning it