Aetna Inc. is suing six New Jersey doctors over medical bills it calls unconscionable," including $56,980 for a bedside consultation and $59,490 for an ultrasound that typically costs $74. The lawsuits could help determine what pricing limits insurers can impose on "out-of-network" physicians who don't have contracts with health plans that spell out how much a service or procedure can cost. One defendant billed $30,000 for a Caesarean birth, and another raised his fee for seeing a critically ill patient in a hospital to $9,000 in 2008 from $500 the year before, the insurer alleges in the suits. Aetna tried in 2007 to impose caps on some out-of-network payments, prompting doctor complaints to the New Jersey Department of Banking and Insurance. The agency sided with the doctors, fined the company $2.5 million, and ordered it to pay out-of-network practitioners enough so that patients wouldn't be asked to pay balances other than co-pays. In 2009, Aetna, UnitedHealth Group Inc., Cigna Corp. and WellPoint Inc. were accused by the New York attorney general of underpaying out-of-network physicians by manipulating a database used to calculate payments. They paid a total of $90 million in settlements without admitting wrongdoing. UnitedHealthcare agreed that year to pay $350 million to settle a lawsuit by the American Medical Association over the same issues. Similar AMA lawsuits against Aetna, Cigna and Wellpoint are pending.