Q20.5

Billable

Discordant atrioventricular connection

HCC Category Mapping

RxHCCHCC 191 — Congenital Heart/Circulatory Disorders and Fontan Circulation

0.000

What This Code Means

A serious heart defect where the upper and lower chambers are connected in an abnormal way, preventing proper blood flow between them.

Coding Tips

•This defect often requires detailed imaging documentation; ensure records include echocardiogram or cardiac catheterization findings
•Frequently occurs with other congenital heart defects; review for additional anomalies requiring separate codes

Clinical Significance

Discordant atrioventricular connection involves abnormal connections between the atria and ventricles, creating complex hemodynamic problems requiring specialized surgical intervention. This condition often presents with cyanosis and requires complex surgical repair to establish normal circulation patterns.

Documentation Requirements

✓Cardiac imaging confirming discordant atrioventricular connections
✓Assessment of associated great artery connections
✓Hemodynamic evaluation and impact
✓Degree of cyanosis and oxygen saturation
✓Surgical intervention history and type of repair
✓Current cardiac function and output
✓Associated anomalies and complications
✓Long-term cardiac monitoring requirements

Commonly Confused Codes

Q20.3 — discordant ventriculoarterial connection Q20.4 — double inlet ventricle Q21.3 — tetralogy of Fallot Q24.0 — dextrocardia I44.2 — atrioventricular block, complete (acquired)

Code Hierarchy

└Q20Congenital malformations of cardiac chambers and connections └Q20.5Discordant atrioventricular connection

└Q20.5Discordant atrioventricular connection