Study: Insurers inaccurate on claims

One in five medical claims are processed inaccurately by health insurers, according to the American Medical Association's third annual analysis of the nation's commercial health insurers and the systems used to manage and pay claims.

The AMA's 2010 National Health Insurer Report Card benchmarked the claims processing accuracy of the nation's seven largest health insurers.

The health insurance industry as a whole has about an 80 percent accuracy rate for processing and paying claims. Coventry Health Care Inc. came out on top with a national accuracy rating of 88.41 percent. Anthem Blue Cross Blue Shield showed a national accuracy rating of 73.98 percent.