G40.50
⚠ Non-billable (Header)Epileptic seizures related to external causes, not intractable
Diseases of the nervous system (G00-G99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
📋 Code Instructions
from G40.5- • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
✅ No additional coding notes for G40.50
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CodeG40.50
BillableNo — Header code
ParentG40.5
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)