Los Angeles ? A woman who had her medical coverage canceled as she was undergoing treatment for breast cancer has been awarded more than $9 million in a case against one of California’s largest health insurers.

Patsy Bates, 52, a hairdresser from Lakewood, had been left with more than $129,000 in unpaid medical bills when Health Net Inc. canceled her policy in 2004.

On Friday, arbitration judge Sam Cianchetti ordered Health Net to repay that amount while providing $8.4 million in punitive damages and $750,000 for emotional distress.

“It’s hard to imagine a situation more trying than the one Bates has had to endure,” Cianchetti wrote in the decision. “The rug was pulled out from underneath, and that occurred at a time when she is diagnosed with breast cancer, one of the leading causes of death for women.”

Bates, a mother of two, said she screamed when she heard about the damage award.

“I am elated,” she said.

Bates’ attorney William Shernoff said he wanted other insurers to take notice of the award.

“We are going to put a stop to this practice,” he said.

Health Net said it was implementing a freeze on policy cancelations that would last until the company sets up a third-party review panel to scrutinize cases.