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Narcolepsy Symptoms

Subtypes of Narcolepsy

Updated DSM-5 (2013) coding procedures for various narcolepsy subtypes:

  • 347.00
    • Narcolepsy without cataplexy but with hypocretin deficiency – most common
    • Autosomal dominant cerebellar ataxia, deafness, and narcolepsy – caused by a DNA mutations and is characterized by later age of onset (e.g., 40 years old) deafness, cerebellar ataxia, and eventually dementia
    • Autosomal dominant narcolepsy, obesity, and type 2 diabetes (narcolepsy, obesity, and type 2 diabetes and low CSF hypocretin-1 levels have been described in rare cases and are associated with a glycoprotein gene mutation)
  • 347.01
    • Narcolepsy with cataplexy but without hypocretin deficiency – rare subtype, seen in less than 5% of narcolepsy cases
  • 347.10
    • Narcolepsy secondary to another medical condition – narcolepsy develops secondary to an infectious disease (Whipple’s disease, sarcoidosis), or alternatively, to a traumatic or tumor induced medical condition responsible for destroying hypocretin neurons. For this subtype, a clinician would first code the underlying medical condition (e.g., 040.2 Whipple’s disease; 347.10 narcolepsy secondary to Whipple’s disease).


Steve Bressert, Ph.D.

Steve Bressert, Ph.D. is an author and retired as a professional in clinical practice. He has been writing about psychology and mental health issues since 1998.

APA Reference
Bressert, S. (2019). Narcolepsy Symptoms. Psych Central. Retrieved on October 18, 2019, from
Scientifically Reviewed
Last updated: 11 Oct 2019
Last reviewed: By a member of our scientific advisory board on 11 Oct 2019
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