G04.31
BillablePostinfectious acute necrotizing hemorrhagic encephalopathy
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
This is a serious brain inflammation that occurs after a viral or bacterial infection, characterized by tissue death and bleeding in the brain. It develops as a complication following an infection rather than being caused directly by the infection itself.
Coding Tips
- •Always document the preceding infection that triggered this condition, as it helps establish the postinfectious relationship and may require an additional code for the causative infection
- •Ensure clinical documentation clearly distinguishes this from other encephalitis types and confirms the hemorrhagic and necrotizing components to support accurate code selection
Code Hierarchy
└G04Encephalitis, myelitis and encephalomyelitis└G04.3Acute necrotizing hemorrhagic encephalopathy└G04.31Postinfectious acute necrotizing hemorrhagic encephalopathy
└G04.31Postinfectious acute necrotizing hemorrhagic encephalopathy