ICD-10-CM › Q00-QA1 › Q00-Q07 › Q codes › Q04

Q04

Other congenital malformations of brain

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 9 more specific codes instead:

  • Q04.0 Congenital malformations of corpus callosum
  • Q04.1 Arhinencephaly
  • Q04.2 Holoprosencephaly
  • Q04.3 Other reduction deformities of brain
  • Q04.4 Septo-optic dysplasia of brain
  • Q04.5 Megalencephaly
  • Q04.6 Congenital cerebral cysts
  • Q04.8 Other specified congenital malformations of brain
  • Q04.9 Congenital malformation of brain, unspecified

What has happened to this code

Every change the publisher made, from 2012 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.

  1. FY2012 Added to the draft code set draft Other congenital malformations of brain

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.

This code

Excludes1 - never coded here

  • cyclopia (Q87.0)
  • macrocephaly (Q75.3)