Q23.0

ICD-10Billable

Congenital stenosis of aortic valve

Official ICD-10-CM descriptor (FY2026)

Congenital stenosis of aortic valve

Q23.0 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Congenital aortic atresia
  • Congenital aortic stenosis NOS

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • congenital stenosis of aortic valve in hypoplastic left heart syndrome (Q23.4)
  • congenital subaortic stenosis (Q24.4)
  • supravalvular aortic stenosis (congenital) (Q25.3)

Related codes in Q23

Where this code sits

Parent code
Q23

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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