G40Epilepsy
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use G40 directly
Use the most specific code supported by the record.
- Chapter VI
- Diseases of the nervous system
- Group G40-G47
- Episodic and paroxysmal disorders
- Official Vietnamese name
- Bệnh động kinh
- Additional WHO coding guidance
- Excl.: Landau-Kleffner syndrome (F80.3) seizure (convulsive) NOS (R56.8) status epilepticus (G41.-) Todd paralysis (G83.8)
Related G40 codes
G40.0
Primary diagnosis candidate
Localization- related (focal)(partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
G40.1
Primary diagnosis candidate
Localization- related (focal)(partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
G40.2
Primary diagnosis candidate
Localization- related (focal)(partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
G40.3
Primary diagnosis candidate
Generalized idiopathic epilepsy and epileptic syndromes
G40.4
Primary diagnosis candidate
Other generalized epilepsy and epileptic syndromes
G40.5
Primary diagnosis candidate
Special epileptic syndromes
G40.6
Primary diagnosis candidate
Grand mal seizures, unspecified (with or without petit mal)
G40.7
Primary diagnosis candidate
Petit mal, unspecified, without grand mal seizures
G40.8
Primary diagnosis candidate
Other epilepsy
G40.9
Primary diagnosis candidate
Epilepsy, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
