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I34.2

Billable

Nonrheumatic mitral (valve) stenosis

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

What This Code Means

The mitral valve opening is abnormally narrow, restricting blood flow from the left atrium to the left ventricle.

Coding Tips

  • •Confirm nonrheumatic cause; rheumatic mitral stenosis uses different codes (I05.0).
  • •Document hemodynamic severity if available (valve area measurements) to support clinical decision-making.

Code Also

  • , if applicable:
  • nonrheumatic mitral (valve) annulus calcification (I34.81)

Code Hierarchy

└I34Nonrheumatic mitral valve disorders└I34.2Nonrheumatic mitral (valve) stenosis
└I34.2Nonrheumatic mitral (valve) stenosis

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