G04.9
G04.9: Encephalitis, myelitis and encephalomyelitis, unspecified
Non-billable headerICD-10-CM
G04.9 is a non-billable header ICD-10-CM code for encephalitis, myelitis and encephalomyelitis, unspecified. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 inherited from the categories above G04.9
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above G04.9
Not part of this code, but both may be coded when both are present.
Other codes that can never be billed with G04.9
Their own Excludes1 notes name this code, so the conflict is not listed above.
- G03Meningitis due to other and unspecified causes
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead G04.9
2 child codes. Green means billable.