ICD-10-CM › Q00-QA1 › Q20-Q28 › Q codes › Q20

Q20

Congenital malformations of cardiac chambers and connections

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:

  • Q20.0 Common arterial trunk
  • Q20.1 Double outlet right ventricle
  • Q20.2 Double outlet left ventricle
  • Q20.3 Discordant ventriculoarterial connection
  • Q20.4 Double inlet ventricle
  • Q20.5 Discordant atrioventricular connection
  • Q20.6 Isomerism of atrial appendages
  • Q20.8 Other congenital malformations of cardiac chambers and connections
  • Q20.9 Congenital malformation of cardiac chambers and connections, 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 Congenital malformations of cardiac chambers and connections

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

  • dextrocardia with situs inversus (Q89.3)
  • mirror-image atrial arrangement with situs inversus (Q89.3)