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ICD-10-CM Code Q20.4
Double inlet ventricle

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
POA Exempt
POA Exempt Code
The Center for Medicare & Medicaid Services (CMS) requires medical coders to indicate whether or not a condition was present at the time of admission, in order to properly assign MS-DRG codes. This "Present On Admission" (POA) indicator is recorded on CMS form 4010A.
| ICD-10 from 2011 - 2016

Q20.4 is a billable ICD code used to specify a diagnosis of double inlet ventricle. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

POA Indicators on CMS form 4010A are as follows:

IndicatorMeaningCMS Will Pay CC/MCC DRG Costs
YDiagnosis was present at time of inpatient admissionYes
NDiagnosis was not present at time of inpatient admissionNo
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.No
WClinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.Yes
1Exempt from POA reportingNo

The ICD code Q20 is used to code Congenital heart defect

Congenital heart defect (CHD), also known as a congenital heart anomaly or congenital heart disease, is a problem in the structure of the heart that is present at birth. Signs and symptoms depend on the specific type of problem. Symptoms can vary from none to life-threatening. When present they may include rapid breathing, bluish skin, poor weight gain, and feeling tired. It does not cause chest pain. Most congenital heart problems do not occur with other diseases. Complications that can result from heart defects include heart failure.

Specialty: Cardiology
MeSH Codes: D006330, D006330, D006330
ICD 9 Codes: 745, 746, 747

The normal structure of the heart (left) in comparison to two common locations for a ventricular septal defect (right), the most common form of congenital heart defect.

Source: Wikipedia

Coding Notes for Q20.4 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Common ventricle
Cor triloculare biatriatum
Single ventricle

MS-DRG Mapping

  • DRG Group #306-307 - Cardiac congenital and valvular disorders with MCC.
  • DRG Group #306-307 - Cardiac congenital and valvular disorders without MCC.

Related Concepts SNOMET-CT

  • Double inlet ventricle (disorder)
  • Acquired subpulmonary stenosis associated with functionally univentricular heart (disorder)
  • Acquired subpulmonary stenosis due to restrictive ventricular defect associated with functionally univentricular heart (disorder)
  • Subaortic stenosis associated with functionally univentricular heart as complication of procedure (disorder)
  • Right atrioventricular valve leaflets absent in double inlet ventricle (unguarded orifice) (disorder)
  • Congenital abnormality of right atrioventricular valve chordae tendinae in double inlet ventricle (disorder)
  • Absent left atrioventricular valve leaflets (disorder)
  • Ebstein's anomaly of left atrioventricular valve in functionally univentricular heart (disorder)

ICD-10-CM Alphabetical Index References for 'Q20.4 - Double inlet ventricle'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Q20.4. Click on any term below to browse the alphabetical index.


Common ventricle (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 745.3 was previously used, Q20.4 is the appropriate modern ICD10 code.

Parent Code: Q20 - Congenital malformations of cardiac chambers and connections

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/Q204