Q20.4

Double inlet ventricle

Billable / specificPOA exempt

Q20.4 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Common ventricle
  • Cor triloculare biatriatum
  • Single ventricle

Includes (from Q20)

  • Note: Codes from this chapter are not for use on maternal records

Excludes1

Not coded here — never report together with this code.

  • dextrocardia with situs inversus (Q89.3) (from Q20)
  • mirror-image atrial arrangement with situs inversus (Q89.3) (from Q20)

Excludes2

Not included here — may be reported together when both conditions exist.

  • inborn errors of metabolism (E70-E88) (from Q20)

Also known as

  • Common ventricle
  • Cor triloculare biatriatum
  • Single ventricle
  • Absence, septum, ventricular
  • Absence, ventricular septum
  • Agenesis, septum, ventricular
  • Common, ventricle
  • Cor, triloculare, biatrium
  • Displacement, displaced, ventricular septum, with rudimentary ventricle
  • Double, inlet ventricle
  • Single, ventricle

Parent code

  • Q20Congenital malformations of cardiac chambers and connectionsHeader

Related codes

  • Q20.0Common arterial trunkBillable
  • Q20.1Double outlet right ventricleBillable
  • Q20.2Double outlet left ventricleBillable
  • Q20.3Discordant ventriculoarterial connectionBillable
  • Q20.5Discordant atrioventricular connectionBillable
  • Q20.6Isomerism of atrial appendagesBillable
  • Q20.8Other congenital malformations of cardiac chambers and connectionsBillable
  • Q20.9Congenital malformation of cardiac chambers and connections, unspecifiedBillable

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