So says the Post, which defined some of the shorthand provided by investigators. The “sandbox,” it says, was defined by investigators as the market for generic prescription drugs, “where everyone was expected to play nice.”

Other common terms were “fair share,” describing how to divvy up sales to make sure that each company continued to profit, while “trashing the market” meant that a competitor ignored these unwritten rules and sold drugs for less than agreed-upon prices.

In addition to these shorthand terms, salespeople for the accused companies were reminded not to put any of their pricing conversations in writing, all part of a plan to keep profits high in “illegal price-fixing schemes of massive proportion.”

The drug companies deny any such thing.

Generics make up 90 percent of prescriptions in the U.S., but only 23 percent of costs, according to the industry trade group Association for Accessible Medicines. Consumers, insured and uninsured, are the ones on the hook—as well as taxpayers, whose taxes go to pay for artificially high prices on drugs under Medicare and Medicaid.

The Post cites one egregious example: the price spike of “a decades-old drug to ease asthma symptoms, albuterol, sold by generic manufacturers Mylan and Sun,” which rose “more than 3,400 percent, from 13 cents a tablet to more than $4.70.” It's just one example cited in a lawsuit that was brought by grocery chains against the generic industry.

“Everyone is paying the price,” Nielsen said, offering “a single word to explain the behavior: 'Greed.'”

Investigators say that even a small price hike in annual sales over several years adds up to billions of additional cost billed to consumers.

The Washington Post names 16 companies caught up in the allegations, including Mylan, Teva and Dr. Reddy's. Mylan has denied wrongdoing, while Teva said in a court filing that “allegations of a price-fixing conspiracy 'are entirely conclusory and devoid of any facts.”