G40.5
G40.5 — Epileptic seizures related to external causes
Non-billable headerICD-10-CM
G40.5 is a non-billable header ICD-10-CM code for epileptic seizures related to external causes. It cannot be billed on its own: choose one of the more specific child codes below.
Use additional code
Add a secondary code to capture the detail described below.
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
- , if applicable, associated epilepsy and recurrent seizures (G40.-)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Epileptic seizures related to alcohol
- Epileptic seizures related to drugs
- Epileptic seizures related to hormonal changes
- Epileptic seizures related to sleep deprivation
- Epileptic seizures related to stress
Risk adjustment
G40.5 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 G40.5
1 child code. Green means billable.
Related codes at this level
Codes that share G40. If G40.5 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
- G40.4Other generalized epilepsy and epileptic syndromes
- G40.8Other epilepsy and recurrent seizures
- G40.9Epilepsy, unspecified
Questions about G40.5
- Is G40.5 a billable ICD-10-CM code?
- No. G40.5 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does G40.5 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Episodic and paroxysmal disorders (G40-G47).