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I51.0

Billable

Cardiac septal defect, acquired

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

What This Code Means

An abnormal opening or hole in the wall between heart chambers that developed after birth, rather than being present from birth.

Coding Tips

  • •Distinguish between acquired septal defects and congenital heart defects (which use different code ranges)
  • •Document the location and size of the defect when available for clinical clarity

Excludes 1 — Do NOT code together

  • cardiac septal defect as current complication following acute myocardial infarction (I23.1, I23.2)

Code Hierarchy

└I51Complications and ill-defined descriptions of heart disease└I51.0Cardiac septal defect, acquired
└I51.0Cardiac septal defect, acquired

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