G47.4
⚠ Non-billable (Header)Narcolepsy and cataplexy
Diseases of the nervous system (G00-G99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
⚠️ Excludes2
inherited from G47Rules from parent category G47: Sleep disorders
- • nightmares (F51.5)
- • nonorganic sleep disorders (F51.-)
- • sleep terrors (F51.4)
- • sleepwalking (F51.3)
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CodeG47.4
BillableNo — Header code
ParentG47
CategoryDiseases of the nervous system (G00-G99)
Excludes10 rule(s)
Excludes24 note(s)
Child codes2
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)