Fighting fraud "is not a top priority" for major insurers, ProPublica reports, because they can just pass along the cost of wasteful spending to enrollees and employers.
Why it matters: Experts say fraud likely accounts for 10% of U.S. health costs. However, "private health insurers, who preside over some $1.2 trillion in spending each year, exhibit a puzzling lack of ambition when it comes to bringing fraudsters to justice," ProPublica's Marshall Allen writes.