The Affordable Care Act has ushered in an era of complex new health insurance products featuring legions of out-of-pocket coinsurance fees, high deductibles and narrow provider networks. Though commercial insurers had already begun to shift toward such policies, the health care law gave them added legitimacy and has vastly accelerated the trend, experts say. The theory behind the policies is that patients should bear more financial risk so they will be more conscious and cautious about health care spending. But some experts say the new policies have also left many Americans scrambling to track expenses from a multitude of sources — such as separate deductibles for network and non-network care, or payments for drugs on an insurer's ever-changing list of drugs that require high co-pays or are not covered at all.