G04.3
⚠ Non-billable
Acute necrotizing hemorrhagic encephalopathy
ICD-10-CM · FY2026 · Diseases of the Nervous System
Code
G04.3
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Nervous System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code G04.3?
ICD-10-CM code G04.3 represents Acute necrotizing hemorrhagic encephalopathy. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Nervous System chapter, effective October 1, 2025 – September 30, 2026.
Is G04.3 billable?
No. G04.3 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is G04.3 in?
G04.3 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.
Related codes in the G04 category
G04
Encephalitis, myelitis and encephalomyelitis
Non-billable
G04.0
Acute disseminated encephalitis and encephalomyelitis (ADEM)
Non-billable
G04.1
Tropical spastic paraplegia
Billable
G04.2
Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
Billable
G04.8
Other encephalitis, myelitis and encephalomyelitis
Non-billable
G04.9
Encephalitis, myelitis and encephalomyelitis, unspecified
Non-billable
G04.00
Acute disseminated encephalitis and encephalomyelitis, unspecified
Billable
G04.01
Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
Billable
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