VANCOUVER -- Private clinics embroiled in a decade-long legal battle against the British Columbia government have scored a victory after a judge ordered an injunction against provisions in a law banning private billing for medically necessary care.

B.C. Supreme Court Justice Janet Winteringham says in a written ruling released Friday that the constitutionality of the provisions must be determined at an ongoing trial. The decision means the government can't enforce the provisions until June or pending another court order.

"The plaintiffs have established that there is a serious question to be tried in that ... some patients will suffer serious physical and/or psychological harm while waiting for health services (and) some physicians will not provide private-pay medically necessary health services after the (provisions) take effect," the ruling says.

The Cambie Surgery Centre, another private clinic and several patients launched a constitutional challenge nearly 10 years ago arguing the province doesn't provide timely medical services, yet residents are prohibited from accessing private health care.

The trial has dragged on for years and Winteringham says in her ruling that she expects it to wrap in April.

Health Minister Adrian Dix announced this spring that starting in October, his government would begin enforcing provisions in the Medicare Protection Act that were first passed by the B.C. Liberals in 2003 but had never been enforced.

The provisions meant that doctors who charged patients for medically necessary procedures would face initial fines of $10,000.

Plaintiffs in the court case swiftly filed an application for an injunction and Winteringham ruled in their favour.

Dix told reporters on Friday that he was disappointed with the ruling.

"It takes away our ability to do what we're obligated to do and we need to do, which is enforce the law," he said.

"That said, the court case involved has been going on for 10 years and I'm a very patient person about court cases. I'm quite impatient, though, about improving patient care in B.C. That's why we've proceeded so vigorously to take actions in increasing public surgeries, to reduce public wait times in the public health-care system."

Health Canada fined the B.C. government $16 million because of illegal extra billing, so the "failure" of the previous government to enforce the act has cost taxpayers, he said. That amount of money could have paid for 55,000 MRIs, he added.

The Canada Health Act prevents private billing for medically necessary health services and continues to be enforced, Dix added.

Dr. Brian Day of the Cambie Surgery Centre could not immediately be reached for comment.

Day has said that his clinic, along with the province's 56 private surgical facilities and 17 others that provide MRIs, helps to keep waiting lists down in the public system.

He warned in April after Dix announced he would enforce Medical Care Act provisions that the move might force private clinics to close.

"The government is in court denying that wait lists are a problem and denying there's any harm from wait lists," he said.