By Mary Agnes Carey
Kaiser Health News Staff Writer

Friday marks the two-year anniversary of the 2010 health care overhaul law, and despite an upcoming challenge in the Supreme Court, it has already begun to be implemented.

While some of the key features don't kick in until 2014, the still-controversial law has already altered the health care industry and established a number of consumer benefits.

Here's an FAQ about some of the law's provisions that are already in place as well as major features of what's to come, if the law stays in place.