G04.0
G04.0: Acute disseminated encephalitis and encephalomyelitis (ADEM)
Non-billable headerICD-10-CM
G04.0 is a non-billable header ICD-10-CM code for acute disseminated encephalitis and encephalomyelitis (adem). It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes1 inherited from the categories above G04.0
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above G04.0
Not part of this code, but both may be coded when both are present.
Other codes that can never be billed with G04.0
Their own Excludes1 notes name this code, so the conflict is not listed above.
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 G04.0
3 child codes. Green means billable.