A review of all postpartum early discharge program outcomes in the United States published between 1960 and 1985 indicates that discharge under 48 hours after delivery has generally been safe for mothers and infants. The levels and types of morbidities did not appear to differ from those experienced with longer hospital stays. Infant readmissions and overall morbidity rates were consistently higher than the number of maternal readmissions and morbidity. The major infant morbidity was hyperbilirubinemia. Differences in identification and treatment of this single problem accounted for much of the variation in infant readmission rates among programs.Expansion of postpartum early discharge based on these favorable results must proceed with caution. Nearly all reported outcomes were for programs with extensive prenatal preparation and postpartum follow-up, serving relatively advantaged middle-class populations. It is not clear that equally good outcomes would result from less intensive programs or those serving disadvantaged populations. More research is needed on the effectiveness of early discharge procedures, cost savings, and patient satisfaction. (BIRTH 14:3, September 1987) Escalating health care costs and changing reimbursement policies have generated great pressure to discharge patients from the hospital as quickly as possible. In obstetric units, changes in high-risk antenatal and intrapartum care have greatly increased demand for beds. Today, postpartum early discharge is still relatively infrequent, usually an option available to self-selected parents. Over the next few years, this practice for low-risk mothers will become more common, perhaps even the prevailing standard of care, since health maintenance organizations (HMOs) and third-party payers will reimburse only the shortest possible stay. For low-income families and families in HMOs or dependent on third-party