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ICD-10 diagnosis code

Q23.0 Congenital stenosis of aortic valve

This page in Swedish

Q23.0 is the ICD-10 code for Congenital stenosis of aortic valve. It is a four-character subcategory of Q23 (Congenital malformations of aortic and mitral valves), the most specific level in the WHO edition. It belongs to the block Q20–Q28 (Congenital malformations of the circulatory system) in Chapter XVII, Congenital malformations, deformations and chromosomal abnormalities.

Code type
Subcategory (4 characters)
Chapter
XVII · Q00–Q99
Classification
WHO ICD-10, 2019 version

What Q23.0 includes

Conditions and terms that are coded here.

  • Congenital aortic:
    • atresia
    • stenosis

What Q23.0 excludes

Conditions that look similar but belong under another code.

  • congenital subaortic stenosis Q24.4
  • that in hypoplastic left heart syndrome Q23.4

Q23.0 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

Q23.0Medfödd aortaklaffstenos

NorwayICD-10-NO

Q23.0Medfødt valvulær aortastenose

DenmarkICD-10-DK

DQ230Medfødt aortaklapstenose

FinlandICD-10-FI

Q23.0Synnynnäinen aorttaläpän ahtauma

GermanyICD-10-GM

Q23.0Angeborene Aortenklappenstenose

FranceICD-10-FR

Q23.0Sténose congénitale de la valvule aortique

NetherlandsICD-10-NL

Q23.0congenitale stenose van aortaklep

United StatesICD-10-CM

Q23.0Congenital stenosis of aortic valve

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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