ICD-10-CM Billable Code

Q21.23

Complete atrioventricular septal defect

Clinical Classification Guidelines

Inclusion Terms

  • Common atrioventricular canal
  • Common atrioventricular septal defect
  • Common endocardial cushion defect
  • Ostium primum atrial septal defect (type I) with common atrioventricular valve and a moderate or larger inlet VSD

Medical Intelligence & Overview

Complete atrioventricular septal defect (AVSD), also known as common atrioventricular canal, is a congenital heart condition characterized by a defect in the walls separating the heart's chambers. This defect affects the atrial and ventricular septa and involves a single, common atrioventricular valve. As a result, blood can flow between all four chambers of the heart, which can lead to various health issues if left untreated.

Causes & Symptoms

Clinical Causes: Genetic factors, including associations with Down syndrome and other chromosomal abnormalities. Family history of congenital heart defects. Environmental exposures during pregnancy, such as maternal diabetes, alcohol use, or certain medications. Developmental issues during fetal heart formation that disrupt normal septal development.

Key Symptoms: Frequent respiratory infections Rapid breathing or breathing difficulties Poor feeding and weight gain in infants Excessive sweating during feeding or activity Lethargy or fatigue Cyanosis, or a bluish tint to the lips and skin, particularly during exertion heart murmurs that can be detected during medical examination

Diagnostic & Treatment

Diagnosis Path: Diagnosis of complete atrioventricular septal defect typically involves a combination of:

Treatment Protocols: Treatment options depend on the severity of the defect and the presence of symptoms, but generally involve surgical intervention to repair the septal defects and reconstruct the atrioventricular valves. The typical approach includes:

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

Clinical Advice & FAQs

Billing Guidance

Is Q21.23 a billable ICD-10 code?
Yes, Q21.23 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report Q21.23?
Clinical documentation must specify the nature of Complete atrioventricular septal defect and any associated comorbidities for accurate reporting.

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