G47.421 Narcolepsy in conditions classified elsewhere with cataplexy
ICD-10-CM · CMS code reference
Official ICD-10-CM description: Narcolepsy in conditions classified elsewhere with cataplexy
Related codes
G47.00Insomnia, unspecified ICD-10-CMG47.01Insomnia due to medical condition ICD-10-CMG47.09Other insomnia ICD-10-CMG47.10Hypersomnia, unspecified ICD-10-CMG47.11Idiopathic hypersomnia with long sleep time ICD-10-CMG47.12Idiopathic hypersomnia without long sleep time ICD-10-CMG47.13Recurrent hypersomnia ICD-10-CMG47.14Hypersomnia due to medical condition ICD-10-CM
Common questions
Is G47.421 a billable code?
Yes. G47.421 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.