Encounter for antenatal screening for malformations

This code signifies a routine prenatal visit specifically focused on screening for potential fetal malformations. It covers the professional services associated with the assessment and evaluation of the fetus for structural abnormalities during the antenatal period, typically through imaging or other non-invasive methods.

Use this code for encounters where the primary purpose is the performance or interpretation of antenatal screening tests for malformations, such as a detailed anatomy ultrasound (e.g., 18-22 week scan). It is appropriate when the patient is pregnant and there is no known or suspected malformation at the time of the screening. This code would also apply to follow-up visits for a previously inconclusive screening result.

• Do not use if a malformation is already suspected or confirmed; instead, code the specific malformation.
• Always sequence this code as a primary diagnosis when it represents the reason for the encounter.
• Pair with an appropriate Z3A.- code for weeks of gestation and any relevant procedure codes (e.g., ultrasound CPTs).