Copy Number Variants and Congenital Anomalies Surveillance: A Suggested Coding Strategy Using the Royal College of Paediatrics and Child Health Version of ICD-10.

The use of array-based comparative genomic hybridization to assess DNA copy number is increasing in many jurisdictions. Such technology identifies more genetic causes of congenital anomalies; however, the clinical significance of some results may be challenging to interpret. A coding strategy to address cases with copy number variants has recently been implemented by the Alberta Congenital Anomalies Surveillance System and is described.