MRIs done early for uncomplicated low back pain and routine vitamin D tests "just to be thorough" are considered "low-value care" and can lead to further testing that can cost patients thousands.
Critics worry that the administration's delays come at a steep cost: Medicare continues to pay for millions of unnecessary exams and patients are being subjected to radiation for no medical benefit.
Why is the price of a CT scan 33 times higher in a hospital emergency room than in an outpatient imaging center just down the street?
Proposals for drones to carry blood, trauma supplies and lab samples are awaiting approval by the Federal Aviation Administration. If the ideas get a green light, they could usher in a new drone age.
A few months after surgery for a painful spinal disk, a woman's doctor asked her for a sample of urine during a follow-up visit. The routine request turned into a financial nightmare.
An analysis of insurance claims in Washington state found that in a single year more than 600,000 patients underwent testing and treatment they didn't need, at an estimated cost of $282 million.
This blood test detected signs of cancer in 70 percent of people with eight common forms of the disease. But it was much less good at identifying cancer in people in the early stages.
The electronic pill looks like the biggest multivitamin a human could possibly swallow. Tests have show that the experimental device can measure gases tied to microbes and digestion.
Companies distributing genetic tests at pro sports events say they can help people make the most of exercise and nutrition. But regulators say some are medical tests that could land people in trouble.