Nov 7 (Reuters) - The U.S. House of Representatives may vote on a sweeping healthcare overhaul as early as Saturday. Here are the main provisions of the House bill.

INSURANCE MARKET CHANGES

* Creates an insurance market exchange where individuals and small businesses would purchase coverage. Sets minimum benefit packages that may be offered through the exchange.

* Creates a new government health insurance plan that would be sold through the exchange.

* Provides for the creation of nonprofit healthcare cooperatives that would sell coverage through the exchange.

* Bars insurers from excluding people for pre-existing conditions and from charging more based on medical history.

* Creates a temporary national high-risk pool program to provide medical coverage to the uninsured, including those with pre-existing conditions who have been denied coverage. The program would operate until the exchange becomes available.

* Permits young people to remain on their parents' health insurance policy up to the age of 27.

* Provides for consumer rebates if premiums far exceed the cost of covering their medical expenses.