G47.429
✓ BillableNarcolepsy in conditions classified elsewhere without cataplexy
Diseases of the nervous system (G00-G99)
📋 Code Instructions
from G47.42- • Code first: underlying condition
✅ No additional coding notes for G47.429
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CodeG47.429
BillableYes
ParentG47.42
CategoryDiseases of the nervous system (G00-G99)
Excludes10 rule(s)
Excludes20 note(s)
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)