Encounter for antenatal screening of mother Includes:Encounter for placental sample (taken vaginally)Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.Excludes1diagnostic examination- code to sign or symptomencounter for suspected maternal and fetal conditions ruled out (Z03.7-)suspected fetal condition affecting management of pregnancy - code to condition in Chapter 15Excludes2abnormal findings on antenatal screening of mother (O28.-)genetic counseling and testing (Z31.43-, Z31.5)routine prenatal care (Z34)