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v1.0.0
ICD-10 Guide
ICD-10 CodesQ20.2

Q20.2

Billable

Double outlet left ventricle

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 Q20.2 is a billable code used to indicate a diagnosis of double outlet left ventricle.

Key Diagnostic Point:

Double outlet left ventricle (DOLV) is a rare congenital heart defect characterized by both great arteries (aorta and pulmonary artery) arising from the left ventricle. This condition leads to significant hemodynamic alterations, as the right ventricle is typically underdeveloped and may not adequately support pulmonary circulation. DOLV can occur as an isolated defect or in conjunction with other congenital anomalies, such as ventricular septal defects (VSD) or coarctation of the aorta. Clinical presentation often includes cyanosis, heart failure, and poor growth in infants. Diagnosis is typically made through echocardiography, which reveals the abnormal anatomy and blood flow patterns. Surgical intervention is usually required to correct the defect, often involving the creation of a biventricular circulation or, in some cases, a univentricular approach. Long-term follow-up is essential due to the risk of arrhythmias and other complications associated with congenital heart disease.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variability in associated congenital anomalies
  • Need for detailed anatomical descriptions in documentation
  • Potential for multiple surgical interventions
  • Differentiation from similar congenital heart defects

Audit Risk Factors

  • Inadequate documentation of associated anomalies
  • Failure to specify the type of surgical intervention
  • Misclassification of the defect as a different congenital heart defect
  • Lack of follow-up documentation post-surgery

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Documentation must include detailed descriptions of the defect, associated anomalies, and clinical management plans. Growth and developmental assessments are also crucial.

Common Clinical Scenarios

Infants presenting with cyanosis, failure to thrive, or heart murmurs; pre-operative assessments for surgical intervention.

Billing Considerations

Pediatric coders must ensure that all congenital anomalies are documented and coded accurately to reflect the complexity of the condition.

Genetics

Documentation Requirements

Genetic counseling notes should include family history, potential genetic syndromes associated with DOLV, and any genetic testing results.

Common Clinical Scenarios

Cases where DOLV is part of a genetic syndrome, such as 22q11.2 deletion syndrome; counseling for parents regarding recurrence risks.

Billing Considerations

Genetic coders should be aware of the implications of chromosomal abnormalities that may co-occur with congenital heart defects.

Coding Guidelines

Inclusion Criteria

Use Q20.2 When
  • Follow the official ICD
  • CM coding guidelines for congenital malformations, ensuring accurate documentation of the defect and any associated conditions
  • Use additional codes for related anomalies as necessary

Exclusion Criteria

Do NOT use Q20.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

33533CPT Code

Repair of double outlet left ventricle

Clinical Scenario

Used during surgical intervention for DOLV.

Documentation Requirements

Operative report detailing the surgical procedure and any complications.

Specialty Considerations

Pediatric cardiology specialists must ensure accurate coding of the procedure.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital heart defects, including DOLV, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital heart defects, including DOLV, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    American Academy of Pediatrics - Congenital Heart Disease

Coding & Billing References

  • •
    American Academy of Pediatrics - Congenital Heart Disease

Frequently Asked Questions

What are the common associated anomalies with double outlet left ventricle?

Common associated anomalies include ventricular septal defects, coarctation of the aorta, and pulmonary stenosis. Accurate coding requires documentation of all associated conditions.