ICD-10-CM · Billable Code
G04.91 — Myelitis, unspecified
Chapter G00-G99: Diseases of the nervous system
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Common questions about G04.91 (Myelitis, unspecified)
What does ICD-10 code G04.91 mean?
G04.91 is the ICD-10-CM 2025 code for Myelitis, unspecified. 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 G04.91 a billable diagnosis code?
Yes, G04.91 is a billable / specific ICD-10-CM code, meaning it can be used by clinicians and hospitals as a primary or secondary diagnosis on claims and electronic health records.
Which ICD-10 chapter does G04.91 belong to?
G04.91 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 Myelitis, unspecified?
For a plain-language explanation of Myelitis, unspecified, ask GoDavaii's Health AI - it explains medical conditions in 90+ languages, free, with no signup. Tap "Ask GoDavaii AI about Myelitis, unspecified" 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 ↗