G40
Header — not billableEpilepsy and recurrent seizures
The ICD-10 code for epilepsy and recurrent seizures is G40.
G40 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 11 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
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.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under G40
- 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
- G40.4Other 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
Related codes in this category
- G43Migrainenon-billable header
- G44Other headache syndromesnon-billable header
- G45Transient cerebral ischemic attacks and related syndromesnon-billable header
- G46Vascular syndromes of brain in cerebrovascular diseasesnon-billable header
- G47Sleep disordersnon-billable header
- G40Epilepsy and recurrent seizuresnon-billable header