GeneDx and Sema4 are now a combined company  Learn more

Prenatal CHD7 Gene Sequencing (CHARGE Syndrome)

New York




  • CHARGE Syndrome

Clinical Utility

  • Full gene sequencing for fetuses with prenatal ultrasound findings suggestive of CHARGE syndrome
  • Mutation-specific testing is available via test code 902 for fetuses with a family history of a known mutation

Lab Method

  • Capillary Sequencing

Test Code


CPT Codes*


ABN Required


Turnaround Time**

2-3 weeks

Preferred Specimen

20 mL Amniotic Fluid

Alternative Specimen

20 mg CVS | 2 T25 flasks of cultured amniocytes | 2 T25 flasks of cultured chorionic villi | 3 Ug DNA Concentration

*The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

**Reporting times are typical and begin once the sample(s) are received at the GeneDx laboratory, but could be extended in situations outside GeneDx’s reasonable control.