G04.9
Header — not billableEncephalitis, myelitis and encephalomyelitis, unspecified
The ICD-10 code for encephalitis, myelitis and encephalomyelitis, unspecified is G04.9.
G04.9 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under G04.9
Related codes in this category
- G04.0Acute disseminated encephalitis and encephalomyelitis (ADEM)non-billable header
- G04.1Tropical spastic paraplegia
- G04.2Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
- G04.3Acute necrotizing hemorrhagic encephalopathynon-billable header
- G04.8Other encephalitis, myelitis and encephalomyelitisnon-billable header
- G04.9Encephalitis, myelitis and encephalomyelitis, unspecifiednon-billable header