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Q25.3

Billable

Supravalvular aortic stenosis

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 aortic valve opening is abnormally narrowed due to tissue above the valve, restricting blood flow from the heart.

Coding Tips

  • •Distinguish this from valvular aortic stenosis (Q23.0); supravalvular stenosis is above the valve itself
  • •Document severity and any associated features like Williams syndrome or familial hypercalcemia

Excludes 1 — Do NOT code together

  • congenital aortic stenosis NOS (Q23.0)
  • congenital stenosis of aortic valve (Q23.0)

Code Hierarchy

└Q25Congenital malformations of great arteries└Q25.3Supravalvular aortic stenosis
└Q25.3Supravalvular aortic stenosis

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