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California BIRTH Defects Monitoring

What are Congenital Heart Defects (CHDs)?

Congenital heart defects (CHDs) are the most common type of birth defect.  As medical care and treatment have advanced, babies with a CHD are living longer and healthier lives. CHDs are present at birth and can affect the structure of a baby's heart and the way it works. They can affect how blood flows through the heart and out to the rest of the body. CHDs can vary from mild (such as a small hole in the heart) to severe (such as missing or poorly formed parts of the heart).

Content provided by the Centers for Disease Control and Prevention (CDC). For information and references about CHDs please visit: What are Congenital Heart Defects?.

​Mother's Age
​Prevalence Rate (per 10,000 births)
​<20
​26.2
​20-24
28.1
​25-29
​29.5
​30-34
28.2
​35-39
​40.5
​40+
98.2
​All Births
31.6

Mother's Race/Ethnicity*
​Prevalence Rate
​White
​30.0
​Black
​25.8
​Hispanic
31.4
​Asian/Pacific Islander
31.7

*White, Black, Asian/Pacific Islander categories are all non-Hispanic

 List of select CHD diagnostic codes included

 Data Source: California Birth Defects Monitoring Program Registry, 2012-2016 (PDF),

 California Central Valley Counties (Fresno, Kern, Kings, Madera, Merced, San Joaquin, Stanislaus, and Tulare.

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