G04.00: Acute disseminated encephalitis and encephalomyelitis, unspecified
G04.00 is the billable ICD-10-CM diagnosis code for Acute disseminated encephalitis and encephalomyelitis, unspecified. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code G04.00?
G04.00 is the ICD-10-CM diagnosis code for Acute disseminated encephalitis and encephalomyelitis, unspecified. It belongs to category G04 (Encephalitis, myelitis and encephalomyelitis).
Is G04.00 a billable code?
Yes. G04.00 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does G04.00 belong to?
G04.00 is part of ICD-10-CM category G04 — Encephalitis, myelitis and encephalomyelitis, which has 28 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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