Idiopathic hypersomnia with long sleep time

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2007 Added to the draft code set draft Idiopathic hypersomnia with long sleep time

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from G47 Sleep disorders

Excludes2 - not included here

nightmares (F51.5)
nonorganic sleep disorders (F51.-)
sleep terrors (F51.4)
sleepwalking (F51.3)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Dyssomnia
Disorder > somnolence, excessive
Disorder > sleep > hypersomnia type
Disorder > sleep > excessive somnolence
Hypersomnia > idiopathic
Hypersomnia > idiopathic > with long sleep time

Codes in the same group

Code	Description	Status
G47.10	Hypersomnia, unspecified	Valid
G47.12	Idiopathic hypersomnia without long sleep time	Valid
G47.13	Recurrent hypersomnia	Valid
G47.14	Hypersomnia due to medical condition	Valid
G47.19	Other hypersomnia	Valid