G04.31 – Postinfectious acute necrotizing hemorrhagic encephalopathy
ICD-10-CM 2027 diagnosis code · Inflammatory diseases of the central nervous system
- Code
G04.31(claims format:G0431)- Description
- Postinfectious acute necrotizing hemorrhagic encephalopathy
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 6. Diseases of the nervous system (G00-G99)
- Block
- G00-G09 Inflammatory diseases of the central nervous system
- Parent codes
- G04 › G04.3
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
G04 – Encephalitis, myelitis and encephalomyelitis
- acute ascending myelitis
- meningoencephalitis
- meningomyelitis
- encephalopathy NOS (G93.40)
G04.3 – Acute necrotizing hemorrhagic encephalopathy
- acute disseminated encephalitis and encephalomyelitis (G04.0-)
Index terms for G04.31
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in G04.3
Frequently asked questions
What is ICD-10 code G04.31?
G04.31 is the ICD-10-CM code for postinfectious acute necrotizing hemorrhagic encephalopathy, in the block G00-G09 (Inflammatory diseases of the central nervous system).
Is G04.31 a billable code?
Yes. G04.31 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does G04.31 belong to?
It belongs to category G04 – Encephalitis, myelitis and encephalomyelitis.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.