One of the big unknowns in health care coverage is always how much any given incident will cost the consumer out of pocket. And a new rule proposed by federal agencies, set to be  published in the Federal Register   November 27, would require employer-sponsored group health plans to provide plan enrollees with estimates of their   out-of-pocket expenses  for services from different health care providers.

According to the  Society for Human Resource Management , the information would be available to enrollees via an online self-service tool so people could shop around before they get care, instead of being hit with the final total after the fact. Comments are due by January 14, 2020.