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I34.1

Billable

Nonrheumatic mitral (valve) prolapse

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

What This Code Means

The mitral valve leaflets bulge backward into the left atrium during heart contraction, which may or may not cause significant leakage.

Coding Tips

  • •Mitral valve prolapse is often asymptomatic; ensure documentation reflects the patient's actual clinical status.
  • •Distinguish from rheumatic mitral prolapse (I09.8) by confirming nonrheumatic etiology.

Excludes 1 — Do NOT code together

  • Marfan's syndrome (Q87.4-)

Code Hierarchy

└I34Nonrheumatic mitral valve disorders└I34.1Nonrheumatic mitral (valve) prolapse
└I34.1Nonrheumatic mitral (valve) prolapse

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