G04.8
ICD-10Non-billable categoryOther encephalitis, myelitis and encephalomyelitis
Official ICD-10-CM descriptor (FY2026)
Other encephalitis, myelitis and encephalomyelitis
G04.8 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Code also
Two codes may be needed; sequencing depends on the reason for the encounter.
- any associated seizure (G40.-, R56.9)
ICD-10-CM FY2026 defines 3 codes beneath G04.8. See the ICD-10-CM index for what this site publishes.
Related codes in G04
Where this code sits
- Parent code
- G04
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.