Page 1 of 37 Louisiana Medicaid Approved Pay and Chase Primary Prenatal Care Diagnosis Codes MCOs must use the "pay and chase" method of payment for prenatal services for individuals with other Health Insurance. The MCO must seek reimbursement from the third party within 60 days after the end of the month in which payment is made. Primary prenatal diagnoses which do not require primary health insurance claim filing by most providers are confined to those listed below. Hospitals are not included and must continue to file claims with the primary health insurance carriers. ICD-9-CM to ICD-10 crosswalk for Prenatal Diagnosis Codes ICD-9-CM Description Code V22.0 Supervision of normal pregnancy V22.1 V23 Supervision of high risk pregnancy V28 Antenatal screening 640-648 Complications related to pregnancy 651-658 Other conditions requiring care in 671 pregnancy 673 675-676 ICD-10-CM Diagnosis Codes – for Prenatal Services upon Implementation of ICD-10 ICD-9-CM code V22.0 maps to the following ICD-10-CM codes Z3400 Encounter for supervision of normal first pregnancy, unspecified trimester Z3403 Encounter for supervision of normal first pregnancy, third trimester Z3401 Encounter for supervision of normal first pregnancy, first trimester Z3402 Encounter for supervision of normal first pregnancy, second trimester ICD-9-CM code V22.