ICD-10-CM · Category
G04 — Encephalitis, myelitis and encephalomyelitis
Chapter G00-G99: Diseases of the nervous system
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G04.0Acute disseminated encephalitis and encephalomyelitis (ADEM)G04.1Tropical spastic paraplegiaG04.2Bacterial meningoencephalitis and meningomyelitis, NECG04.3Acute necrotizing hemorrhagic encephalopathyG04.8Other encephalitis, myelitis and encephalomyelitisG04.9Encephalitis, myelitis and encephalomyelitis, unspecified
Common questions about G04 (Encephalitis, myelitis and encephalomyelitis)
What does ICD-10 code G04 mean?
G04 is the ICD-10-CM 2025 code for Encephalitis, myelitis and encephalomyelitis. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is G04 a billable diagnosis code?
G04 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under G04. Browse the sub-codes listed on this page.
Which ICD-10 chapter does G04 belong to?
G04 belongs to the chapter "Diseases of the nervous system" (codes G00-G99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Encephalitis, myelitis and encephalomyelitis?
For a plain-language explanation of Encephalitis, myelitis and encephalomyelitis, ask GoDavaii's Health AI - it explains medical conditions in 90+ languages, free, with no signup. Tap "Ask GoDavaii AI about Encephalitis, myelitis and encephalomyelitis" above to get a personalised answer.
Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗