Hospitals must list the cash prices for services like X-rays or medical tests online, according to federal law. A new study finds the rule is largely ignored.

The Hospital Price Transparency Law is intended to make the hidden costs of services such as X-rays, medical tests or colonoscopies clear to patients before they enter the hospital.

But a study published Tuesday in the Journal of the American Medical Association added to mounting evidence that hospitals are largely ignoring the law.  Read the Full Article.