G40.0

G40.0: Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset

Non-billable headerICD-10-CM

G40.0 is a non-billable header ICD-10-CM code for localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset. 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.

adult onset localization-related epilepsy (G40.1-, G40.2-)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Benign childhood epilepsy with centrotemporal EEG spikes
Childhood epilepsy with occipital EEG paroxysms

Excludes1 inherited from the categories above G40.0

A category’s note binds every code beneath it.

Written on G40: Epilepsy and recurrent seizures

conversion disorder with seizures (F44.5)
convulsions NOS (R56.9)
post traumatic seizures (R56.1)
seizure (convulsive) NOS (R56.9)
seizure of newborn (P90)

Excludes2 inherited from the categories above G40.0

Not part of this code, but both may be coded when both are present.

Written on G40: Epilepsy and recurrent seizures

hippocampal sclerosis (G93.81)
mesial temporal sclerosis (G93.81)
temporal sclerosis (G93.81)
Todd's paralysis (G83.84)

Other codes that can never be billed with G40.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

G25.3Myoclonus
R56Convulsions, not elsewhere classified
R56.1Post traumatic seizures

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 G40.0

2 child codes. Green means billable.