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Q23.3

Billable

Congenital mitral insufficiency

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

What This Code Means

A birth defect where the mitral valve does not close properly, allowing blood to leak backward into the upper left chamber of the heart.

Coding Tips

  • •Document the severity of mitral regurgitation if available in the clinical notes
  • •Differentiate from acquired mitral insufficiency (I34.0) which develops after birth

Code Hierarchy

└Q23Congenital malformations of aortic and mitral valves└Q23.3Congenital mitral insufficiency
└Q23.3Congenital mitral insufficiency

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