G40.4
⚠ Non-billable (Header)Other generalized epilepsy and epileptic syndromes
Diseases of the nervous system (G00-G99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
Also Known As
Epilepsy with grand mal seizures on awakeningEpilepsy with myoclonic absencesEpilepsy with myoclonic-astatic seizuresGrand mal seizure NOSNonspecific atonic epileptic seizuresNonspecific clonic epileptic seizuresNonspecific myoclonic epileptic seizuresNonspecific tonic epileptic seizuresNonspecific tonic-clonic epileptic seizuresSymptomatic early myoclonic encephalopathy
❌ Excludes1
inherited from G40Rules from parent category G40: Epilepsy and recurrent seizures
- • conversion disorder with seizures (F44.5)
- • convulsions NOS (R56.9)
- • post traumatic seizures (R56.1)
- • seizure (convulsive) NOS (R56.9)
- • seizure of newborn (P90)
⚠️ Excludes2
inherited from G40Rules from parent category G40: Epilepsy and recurrent seizures
- • hippocampal sclerosis (G93.81)
- • mesial temporal sclerosis (G93.81)
- • temporal sclerosis (G93.81)
- • Todd's paralysis (G83.84)
🧪 Validate Combinations
Add G40.4 to the Excludes Checker to validate against your full code list.
Open in Checker →Code Information
CodeG40.4
BillableNo — Header code
ParentG40
CategoryDiseases of the nervous system (G00-G99)
Excludes15 rule(s)
Excludes24 note(s)
Child codes3
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)