G40.4
Header — not billableOther generalized epilepsy and epileptic syndromes
The ICD-10 code for other generalized epilepsy and epileptic syndromes is G40.4.
G40.4 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Epilepsy with grand mal seizures on awakening
- Epilepsy with myoclonic absences
- Epilepsy with myoclonic-astatic seizures
- Grand mal seizure NOS
- Nonspecific atonic epileptic seizures
- Nonspecific clonic epileptic seizures
- Nonspecific myoclonic epileptic seizures
- Nonspecific tonic epileptic seizures
- Nonspecific tonic-clonic epileptic seizures
- Symptomatic early myoclonic encephalopathy
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- G40.0Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onsetnon-billable header
- G40.1Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizuresnon-billable header
- G40.2Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizuresnon-billable header
- G40.3Generalized idiopathic epilepsy and epileptic syndromesnon-billable header
- G40.5Epileptic seizures related to external causesnon-billable header
- G40.8Other epilepsy and recurrent seizuresnon-billable header
- G40.9Epilepsy, unspecifiednon-billable header
- G40.AAbsence epileptic syndromenon-billable header
- G40.BJuvenile myoclonic epilepsy [impulsive petit mal]non-billable header
- G40.CLafora progressive myoclonus epilepsynon-billable header
- G40.4Other generalized epilepsy and epileptic syndromesnon-billable header