G40
G40: Epilepsy and recurrent seizures
Non-billable headerICD-10-CM
G40 is a non-billable header ICD-10-CM code for epilepsy and recurrent seizures. 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.
Excludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Notes
Additional guidance from the ICD-10-CM tabular list.
- the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
Other codes that can never be billed with G40
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 G40
11 child codes. Green means billable.
- G40.0Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
- G40.1Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
- G40.2Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
- G40.3Generalized idiopathic epilepsy and epileptic syndromes
- G40.AAbsence epileptic syndrome
- G40.BJuvenile myoclonic epilepsy [impulsive petit mal]
- G40.CLafora progressive myoclonus epilepsy
- G40.4Other generalized epilepsy and epileptic syndromes
- G40.5Epileptic seizures related to external causes
- G40.8Other epilepsy and recurrent seizures
- G40.9Epilepsy, unspecified