G47.421
Secondary cataplexy and narcolepsy
Secondary narcolepsy with cataplexy
G47.421 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM G47.421 became effective on October 1, 2022.
This is the American ICD-10-CM version of G47.421 – other international versions of ICD-10 G47.421 may differ.