The Senate is close to approving a trio of health care bills aimed at reducing costs and increasing transparency in the system. The bills would help curb surprise billing and ease restrictive laws that prevent health care companies from increasing supply. But they fall short of more substantial changes some policy experts have pushed. “Health care costs just keep eating up more and more of a family’s budget,” said Sen. Joyce Krawiec, R-Forsyth, a sponsor of each bill. “It’s unsustainable, and it’s holding back economic growth in North Carolina.” Senate Bill 505 would require hospitals to tell their patients if any of the providers that might take part of their care are out of network for their insurance. This would prevent surprisingly high bills after a procedure. Under current law, a person could go in for a knee surgery at an in-network hospital and only later find out the anesthesiologist was out-of-network, when he gets a large bill for that service.