2020 ICD-10-CM Diagnosis Code Q20.4

Double inlet ventricle

    2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
  • Q20.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM Q20.4 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Q20.4 - other international versions of ICD-10 Q20.4 may differ.
Applicable To
  • Common ventricle
  • Cor triloculare biatriatum
  • Single ventricle
The following code(s) above Q20.4 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Q20.4:
  • Q00-Q99
    2020 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    Note
    • Codes from this chapter are not for use on maternal records
    Type 2 Excludes
    • inborn errors of metabolism (E70-E88)
    Congenital malformations, deformations and chromosomal abnormalities
  • Q20
    ICD-10-CM Diagnosis Code Q20

    Congenital malformations of cardiac chambers and connections

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • dextrocardia with situs inversus (Q89.3)
    • mirror-image atrial arrangement with situs inversus (Q89.3)
    Congenital malformations of cardiac chambers and connections
Approximate Synonyms
  • Common ventricle
Clinical Information
  • An umbrella term used to describe several very different complex congenital heart defects that share the same problem: the heart has only one functional ventricle (anatomically right or left or indeterminate) supplying the systemic circulation. These defects include tricuspid atresia, hypoplastic left or right heart syndrome, double outlet right ventricle, double inlet left ventricle, and other forms of single ventricle defects.
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • Q20.4 is considered exempt from POA reporting.
ICD-10-CM Q20.4 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 306 Cardiac congenital and valvular disorders with mcc
  • 307 Cardiac congenital and valvular disorders without mcc

Convert Q20.4 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to Q20.4:
  • Absence (of) (organ or part) (complete or partial)
    • septum
      • ventricular Q20.4 (congenital)
    • ventricular septum Q20.4
  • Agenesis
  • Common
    • ventricle Q20.4
  • Cor
    • triloculare Q20.8
      ICD-10-CM Diagnosis Code Q20.8

      Other congenital malformations of cardiac chambers and connections

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Cor binoculare
      • biatrium Q20.4
  • Displacement, displaced
    • ventricular septum Q21.0
      ICD-10-CM Diagnosis Code Q21.0

      Ventricular septal defect

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Roger's disease
      • with rudimentary ventricle Q20.4
  • Double
    • inlet ventricle Q20.4
  • Single
    • ventricle Q20.4

ICD-10-CM Codes Adjacent To Q20.4
Q18.5 Microstomia
Q18.6 Macrocheilia
Q18.7 Microcheilia
Q18.8 Other specified congenital malformations of face and neck
Q18.9 Congenital malformation of face and neck, unspecified
Q20 Congenital malformations of cardiac chambers and connections
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
Q21 Congenital malformations of cardiac septa
Q21.0 Ventricular septal defect
Q21.1 Atrial septal defect
Q21.2 Atrioventricular septal defect
Q21.3 Tetralogy of Fallot
Q21.4 Aortopulmonary septal defect

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.