ICD-10-CM · Category

G04.9 — Encephalitis, myelitis and encephalomyelitis, unspecified

Chapter G00-G99: Diseases of the nervous system

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Sub-codes under G04.9

G04.90Encephalitis and encephalomyelitis, unspecifiedG04.91Myelitis, unspecified

Related diagnoses

G04.0Acute disseminated encephalitis and encephalomyelitis (ADEM)G04.1Tropical spastic paraplegiaG04.2Bacterial meningoencephalitis and meningomyelitis, NECG04.3Acute necrotizing hemorrhagic encephalopathyG04.8Other encephalitis, myelitis and encephalomyelitis

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗