G40.8
ICD-10Non-billable categoryOther epilepsy and recurrent seizures
Official ICD-10-CM descriptor (FY2026)
Other epilepsy and recurrent seizures
G40.8 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Inclusion terms
- Epilepsies and epileptic syndromes undetermined as to whether they are focal or generalized
- Landau-Kleffner syndrome
ICD-10-CM FY2026 defines 6 codes beneath G40.8. See the ICD-10-CM index for what this site publishes.
Related codes in G40
- G40.0Local-rel (focal) idio epilepsy w seizures of loc onsetcategory
- G40.1Local-rel (focal) symptc epilepsy w simple partial seizurescategory
- G40.2Local-rel (focal) symptc epilepsy w complex partial seizurescategory
- G40.3Generalized idiopathic epilepsy and epileptic syndromescategory
- G40.AAbsence epileptic syndromecategory
- G40.BJuvenile myoclonic epilepsy [impulsive petit mal]category
- G40.CLafora progressive myoclonus epilepsycategory
- G40.4Other generalized epilepsy and epileptic syndromescategory
- G40.5Epileptic seizures related to external causescategory
- G40.9Epilepsy, unspecifiedcategory
Where this code sits
- Parent code
- G40
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.