A new study challenged the accuracy of public health data on deaths related to pregnancy and childbirth — and the narrative of high and rising U.S. maternal mortality rates. An unusual public dispute has ensued.
How often do health insurers say no to patients? No one knows.
Insurers’ denial rates — a critical measure of how reliably they pay for customers’ care — remain mostly secret to the public. Federal and state regulators have done little to change that.
