Encounter for antenatal screening for other genetic defects

This code signifies a prenatal visit specifically for screening a fetus for genetic abnormalities other than those explicitly covered by more specific Z codes (e.g., Down syndrome, neural tube defects). It indicates the patient is undergoing testing to identify potential inherited conditions or chromosomal disorders in the unborn child.

Apply this code when a pregnant patient presents for antenatal screening tests such as carrier screening for conditions like cystic fibrosis, fragile X syndrome, or spinal muscular atrophy, or for general chromosomal microarray analysis. It is appropriate for routine screening performed without a specific family history or known risk factor for a particular genetic defect.

• Always sequence this code as a secondary diagnosis when the primary reason for the encounter is routine prenatal care (e.g., Z34.00-Z34.93).
• Do not use this code if a specific genetic defect is already suspected or confirmed; instead, use the appropriate Z code for confirmed or suspected genetic conditions.
• Ensure supporting documentation clearly indicates the type of genetic screening performed to justify the use of this code.