Q20.4
Double inlet ventricle
Clinical Classification Guidelines
Inclusion Terms
- Common ventricle
- Cor triloculare biatriatum
- Single ventricle
Medical Intelligence & Overview
Double inlet ventricle (ICD-10 code Q20.4) is a rare congenital heart defect characterized by both atria of the heart connecting primarily to a single ventricle. This condition, also known as common ventricle or cor triloculare biatriatum, results in a heart with only one functional pumping chamber instead of the usual two. The abnormal connection affects blood flow within the heart, impacting overall cardiovascular health. Recognized as part of the spectrum of single ventricle conditions, this defect can vary in severity and often requires medical management and surgical intervention to improve quality of life.
Causes & Symptoms
Clinical Causes: Genetic mutations or inherited disorders Environmental factors during pregnancy such as maternal diabetes or exposure to certain medications or toxins Intrauterine factors affecting heart development Family history of congenital heart defects
Key Symptoms: Cyanosis (a bluish tint to the skin and lips, especially during activity or feeding) Rapid breathing or shortness of breath Poor feeding and weight gain in infants Fatigue during activity Heart murmurs detected during physical examination Swelling in the legs, abdomen, or neck due to fluid buildup Irregular heartbeat
Diagnostic & Treatment
Diagnosis Path: Diagnosis of double inlet ventricle typically involves a combination of clinical assessment and specialized imaging. Doctors may perform:
Treatment Protocols: Management of a double inlet ventricle depends on the severity of the defect and the presence of symptoms. Options may include:
Clinical Advice & FAQs
Billing Guidance
Is Q20.4 a billable ICD-10 code?
Yes, Q20.4 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report Q20.4?
Clinical documentation must specify the nature of Double inlet ventricle and any associated comorbidities for accurate reporting.
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