Is G40.9 a billable code?
No. G40.9 is a header code that groups 4 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
G40.9: Epilepsy, unspecified
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
G40.9 groups related diagnoses under epilepsy, unspecified. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under G40.9
- G40.901Epilepsy, unspecified, not intractable, with status epilepticus
- G40.909Epilepsy, unspecified, not intractable, without status epilepticus
- G40.911Epilepsy, unspecified, intractable, with status epilepticus
- G40.919Epilepsy, unspecified, intractable, without status epilepticus
Other codes in G40 Epilepsy and recurrent seizures
- G40.0Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onsetheader
- G40.1Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizuresheader
- G40.2Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizuresheader
- G40.3Generalized idiopathic epilepsy and epileptic syndromesheader
- G40.4Other generalized epilepsy and epileptic syndromesheader
- G40.5Epileptic seizures related to external causesheader
- G40.8Other epilepsy and recurrent seizuresheader
- G40.AAbsence epileptic syndromeheader
- G40.BJuvenile myoclonic epilepsy [impulsive petit mal]header
- G40.CLafora progressive myoclonus epilepsyheader
G40.9 questions
What does G40.9 mean?
G40.9 is the ICD-10-CM code for Epilepsy, unspecified. It is in chapter 6, Diseases of the nervous system (G00-G99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.