Results from our 2015 Registry report provides data on the most frequently reported birth defects.  Here we have listed the most common structural birth defects.

Some of the most frequent structural problems by order of case numbers are:

List of Structural Birth Defects	Count
Gastroschisis	307
Malformed fingers, hands or arms	289
Cleft palate	257
Malformed toes, feet or legs	229
Undescended testicles	220
Clubfoot	213
Ventricular septal defect	190
Hydrocephalus	174
Facial asymmetry	173
Atrial septal defect	171
Low set ears	166
Absent or underdeveloped lung	164
Cleft lip	164
Absent or malformed ear(s)	162
Spina bifida	152
Cerebral palsy	138
Rib abnormality	131
Tracheoesophageal fistula	131

Since October of 2015, parents have completed 3983 questionnaires with case reports for 4529 children (more than one child in a family can be reported on a questionnaire) in the on-­‐line National Birth Defect Registry. We have reports for 2372 males, 2144 females and 13 cases where the sex was not entered.

See our full report for details