Rett's syndrome

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 Rett's syndrome

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 F84 Pervasive developmental disorders

Code also

any associated medical condition and intellectual disabilities

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.

Rett's disease or syndrome

Codes in the same group

Code	Description	Status
F84.0	Autistic disorder	Valid
F84.3	Other childhood disintegrative disorder	Valid
F84.5	Asperger's syndrome	Valid
F84.8	Other pervasive developmental disorders	Valid
F84.9	Pervasive developmental disorder, unspecified	Valid