G40.4
G40.4 — Other generalized epilepsy and epileptic syndromes
Non-billable headerICD-10-CM
G40.4 is a non-billable header ICD-10-CM code for other generalized epilepsy and epileptic syndromes. It cannot be billed on its own: choose one of the more specific child codes below.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- 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
Risk adjustment
G40.4 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead G40.4
3 child codes. Green means billable.
Related codes at this level
Codes that share G40. If G40.4 is not quite right, the correct code is usually one of these.
- G40.0Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
- G40.1Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
- G40.2Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
- G40.3Generalized idiopathic epilepsy and epileptic syndromes
- G40.AAbsence epileptic syndrome
- G40.BJuvenile myoclonic epilepsy [impulsive petit mal]
- G40.CLafora progressive myoclonus epilepsy
- G40.5Epileptic seizures related to external causes
- G40.8Other epilepsy and recurrent seizures
- G40.9Epilepsy, unspecified
Questions about G40.4
- Is G40.4 a billable ICD-10-CM code?
- No. G40.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does G40.4 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Episodic and paroxysmal disorders (G40-G47).