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Q21.19

Billable

Other specified atrial septal defect

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A birth defect where there is an abnormal opening in the wall between the upper heart chambers that does not fit into the other specified categories of atrial septal defects.

Coding Tips

  • •Use this code for atrial septal defects that are documented but do not match the specific types (ostium secundum, primum, coronary sinus, or sinus venosus)
  • •Ensure documentation is reviewed to confirm the defect cannot be classified into a more specific ASD category

Code Hierarchy

└Q21Congenital malformations of cardiac septa└Q21.1Atrial septal defect└Q21.19Other specified atrial septal defect
└Q21.19Other specified atrial septal defect

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