Reform law rules raise questions; Future revisions expected to clarify several issues.

Byline: JERRY GEISEL

Regulations to implement sweeping health care reform legislation that Congress passed and the president signed into law in March have been issued at a torrid pace.

"Regulators have really worked at warp speed to get rules out prior to the effective date of provisions. Even regulators would probably admit that the speed has been unusual," said Michael Thompson, a principal at PricewaterhouseCoopers L.L.P. in New York.

"They have worked around the clock. They have been extraordinarily diligent," concurred Frank McArdle, a consultant in the Washington office of Hewitt Associates Inc.

While the Departments of Labor, Health and Human Services and Internal Revenue Service have issued rules to implement the …