Childbirth in the United States is uniquely expensive, and maternity and newborn care constitute the single biggest category of hospital payouts for most commercial insurers and state Medicaid programs. The cumulative costs of approximately four million annual births is well over $50 billion. And though maternity care costs far less in other developed countries than it does in the United States, studies show that their citizens do not have less access to care or to high-tech care during pregnancy than Americans.