G04.90
BillableEncephalitis and encephalomyelitis, unspecified
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Inflammation of the brain and spinal cord together when the specific type cannot be determined.
Coding Tips
- •This is an unspecified code; use only when more specific diagnosis codes cannot be determined from documentation
- •Review imaging and CSF results to see if a more specific code can be assigned
Code Hierarchy
└G04Encephalitis, myelitis and encephalomyelitis└G04.9Encephalitis, myelitis and encephalomyelitis, unspecified└G04.90Encephalitis and encephalomyelitis, unspecified
└G04.90Encephalitis and encephalomyelitis, unspecified