G04.39 – Other acute necrotizing hemorrhagic encephalopathy

ICD-10-CM 2027 diagnosis code · Inflammatory diseases of the central nervous system

Billable code

ICD-10-CM code G04.39
Code
G04.39 (claims format: G0439)
Description
Other 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 for G04.39

Code also:
  • underlying etiology, if applicable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

G04 – Encephalitis, myelitis and encephalomyelitis

Includes:
  • acute ascending myelitis
  • meningoencephalitis
  • meningomyelitis
Excludes1 (not coded here):
Excludes2 (not included here):
  • acute transverse myelitis (G37.3)
  • alcoholic encephalopathy (G31.2)
  • multiple sclerosis (G35-)
  • myalgic encephalomyelitis (G93.32)
  • subacute necrotizing myelitis (G37.4)
  • toxic encephalitis (G92.8)
  • toxic encephalopathy (G92.8)

G04.3 – Acute necrotizing hemorrhagic encephalopathy

Excludes1 (not coded here):
  • acute disseminated encephalitis and encephalomyelitis (G04.0-)

Index terms for G04.39

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 G04.39?

G04.39 is the ICD-10-CM code for other acute necrotizing hemorrhagic encephalopathy, in the block G00-G09 (Inflammatory diseases of the central nervous system).

Is G04.39 a billable code?

Yes. G04.39 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does G04.39 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.