Q21.22
Transitional atrioventricular septal defect
Clinical Classification Guidelines
Inclusion Terms
- Intermediate atrioventricular canal
- Intermediate atrioventricular septal defect
- Intermediate endocardial cushion defect
- Ostium primum atrial septal defect (type I) with separate atrioventricular valves and a small or restrictive inlet VSD
- Transitional atrioventricular canal
- Transitional endocardial cushion defect
Medical Intelligence & Overview
Transitional atrioventricular septal defect (AVSD), coded as Q21.22 in the ICD-10 system, is a congenital heart condition that involves abnormal openings and structures between the heart's chambers. This defect affects the heart's atrial and ventricular septa (walls) and the valves between the upper and lower chambers, leading to inefficient blood flow. It is a form of intermediate atrioventricular canal defect, characterized by specific anatomical features that distinguish it from other types of septal defects.
Causes & Symptoms
Clinical Causes: Genetic syndromes such as Down syndrome or other chromosomal abnormalities Family history of congenital heart defects Maternal illness or infections during pregnancy Exposure to certain medications or substances during pregnancy Maternal diabetes or other maternal health issues
Key Symptoms: Rapid breathing or difficulty breathing, especially during feeding or activity Poor feeding and weight gain in infants Frequent respiratory infections Fatigue or tiredness easily Murmurs heard during heartbeat evaluation Cyanosis (a bluish tint to the skin, lips, or nails) in severe cases Swelling in the body's extremities or abdomen due to fluid retention Pale skin and difficulty breathing during exertion
Diagnostic & Treatment
Diagnosis Path: Physical exam with auscultation to detect heart murmurs Echocardiogram (ultrasound of the heart) to visualize the septal openings and valve structures Chest X-ray to assess heart size and pulmonary circulation Electrocardiogram (ECG) to analyze heart rhythm and electrical activity Cardiac MRI or other advanced imaging techniques if needed Monitoring for any associated syndromes or anomalies
Treatment Protocols: Open-heart surgery to close septal defects and reconstruct or repair atrioventricular valves Medical management with medications such as diuretics, ACE inhibitors, or digoxin to manage symptoms before surgery Long-term follow-up with a cardiologist to monitor cardiac function Additional procedures or interventions if there are residual defects or valve issues Supportive care, including nutritional support and management of associated conditions
Clinical Advice & FAQs
Billing Guidance
Is Q21.22 a billable ICD-10 code?
Yes, Q21.22 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report Q21.22?
Clinical documentation must specify the nature of Transitional atrioventricular septal defect and any associated comorbidities for accurate reporting.
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