G47.4
Non-billableNarcolepsy and cataplexy
G47.4 is the ICD-10-CM code for Narcolepsy and cataplexy. It is a non-billable category code — use a more specific child code such as G47.41 for billing.
G00-G99 Diseases of the nervous system
What this means — in plain language
MedlinePlus · NIHWhat is sleep? While you are sleeping your brain and body functions are still active. Sleep is a natural process that helps your body restore energy, supports learning and memory, and keeps you healthy. It's not just the number of hours of sleep you get that matters. The quality of your sleep is also important. During the night, your brain cycles through different stages of non-rapid eye movement (non-REM) sleep and…
Read more about Sleep Disorders at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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