G40.4 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Other generalized epilepsy and epileptic syndromes.
Inclusion term
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
Codes
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code