Congenital malformations of aortic and mitral valves (Q23)
ICD-10 code Q23 covers a group of congenital malformations affecting the aortic and mitral heart valves, essential for proper blood flow through the heart. These codes specify various structural abnormalities present from birth, such as stenosis (narrowing) or insufficiency (leakage) of these valves.
The section includes distinct codes like Q23.0 for congenital stenosis of the aortic valve, often referenced by terms like "bicuspid valve calcification" or "aortic valve atresia." Q23.1 captures congenital aortic valve insufficiency, which can be known as "bicuspid aortic valve" or "congenital prolapse of aortic valve." Mitral valve issues are detailed under Q23.2 for mitral stenosis and Q23.3 for mitral insufficiency, linked with terms such as "parachute mitral valve" or "mitral regurgitation of newborn." More complex syndromes, including Q23.4 for hypoplastic left heart syndrome, highlight critical congenital defects. Other specified forms like bicuspid aortic valve (Q23.81) and congenital mitral valve cleft (Q23.82) are also cataloged. The unspecified malformations fall under Q23.9. This coding section helps clinicians, coders, and researchers accurately identify congenital valve conditions via ICD-10 codes.
Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Congenital malformations of the circulatory system (Q20-Q28)
Q23 Congenital malformations of aortic and mitral valves
- Q23.0 Congenital stenosis of aortic valve
- Q23.1 Congenital insufficiency of aortic valve
- Q23.2 Congenital mitral stenosis
- Q23.3 Congenital mitral insufficiency
- Q23.4 Hypoplastic left heart syndrome
Q23.8 Other congenital malformations of aortic and mitral valves DELETED CODE
- Q23.81 Bicuspid aortic valve NEW CODE
- Q23.82 Congenital mitral valve cleft leaflet NEW CODE
- Q23.88 Other congenital malformations of aortic and mitral valves NEW CODE
- Q23.9 Congenital malformation of aortic and mitral valves, unspecified
Congenital malformations of aortic and mitral valves (Q23)
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Hypoplastic Left Heart Syndrome
A condition caused by underdevelopment of the whole left half of the heart. It is characterized by hypoplasia of the left cardiac chambers (HEART ATRIUM; HEART VENTRICLE), the AORTA, the AORTIC VALVE, and the MITRAL VALVE. Severe symptoms appear in early infancy when DUCTUS ARTERIOSUS closes.
Quadricuspid Aortic Valve
Congenital malformation where the AORTIC VALVE has four instead of three cusps. It is often associated with AORTIC REGURGITATION and AORTIC VALVE STENOSIS.
