Congenital hydrocephalus, unspecified

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 Congenital hydrocephalus, unspecified

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 Q03 Congenital hydrocephalus

Excludes1 - never coded here

Arnold-Chiari syndrome, type II (Q07.0-)
acquired hydrocephalus (G91.-)
hydrocephalus due to congenital toxoplasmosis (P37.1)
hydrocephalus with spina bifida (Q05.0-Q05.4)

Includes

hydrocephalus in newborn

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.

Cleft
Extra
Fused
Stump
Patent
Trifid
Triple
Window
Aplasia
Missing
Aberrant
Immature
Patulous
Abnormity
Asymmetry
Dysplasia
Additional
Amputation
Lobulation
Nonclosure
Nondescent
Fold, folds
Rudimentary
Undescended
Malformation
Triplication
Transposition
Birth > defect
Maldevelopment
Disarticulation
Septum, septate
Union, abnormal
Underdevelopment
Dilated, dilation
Imperfect > fusion
Macrohydrocephalus
Vestige, vestigial
Water > on > brain
Deformity > cranium
Duplication, duplex

Showing 40 of 136 index phrases.

Codes in the same group

Code	Description	Status
Q03.0	Malformations of aqueduct of Sylvius	Valid
Q03.1	Atresia of foramina of Magendie and Luschka	Valid
Q03.8	Other congenital hydrocephalus	Valid