EXPLAINER: How will insurers cover a new Alzheimer’s drug?

Federal regulators have approved the first new drug for Alzheimer’s disease in nearly 20 years, leaving patients waiting to see how insurers will handle the pricey new treatment. Health care experts expect broad coverage of the drug, which was approved Monday. But but what that means for patients will vary widely depending on their health insurance plan. In some cases, that could mean coming up with several thousand dollars to pay for what the insurer doesn’t cover. Insurers also are expected to require pre-approval of both the drug and brain scans needed to monitor patients before they agree to coverage.