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G40.83

⚠ Non-billable (Header)

Dravet syndrome

Diseases of the nervous system (G00-G99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Polymorphic epilepsy in infancy (PMEI)Severe myoclonic epilepsy in infancy (SMEI)
✅ No additional coding notes for G40.83

Child Codes (2)

G40.833Dravet syndrome, intractable, with status epilepticusG40.834Dravet syndrome, intractable, without status epilepticus

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Code Information

CodeG40.83
BillableNo — Header code
ParentG40.8
CategoryDiseases of the nervous system (G00-G99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes2

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)