G40.3
Header — not billableGeneralized idiopathic epilepsy and epileptic syndromes
The ICD-10 code for generalized idiopathic epilepsy and epileptic syndromes is G40.3.
G40.3 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 more specific codes below.
Clinical notes
Code also
Two codes may be needed to fully describe a condition, but unlike Code First/Use Additional Code, the sequencing order is not mandated by convention.
- MERRF syndrome, if applicable (E88.42)
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
- G40.4Other generalized 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
- G40.3Generalized idiopathic epilepsy and epileptic syndromesnon-billable header