Do all Cigna plans make you have diagnostic tests in non-hospital ociated facilities to avoid deductibles?

My HMO plan allows me to have routine tests such as mammograms, MRI's, Xrays, bone density screens, etc in a hospital or hospital facility without paying the hospital deductible ($200 for my plan). BUT, if, I need a follow-up test (further mammogram pictures, etc) OR, if I have any diagnostic exams/tests at the same hospital-ociated facility, I must pay the $200. And no co-pay if I go to a facility NOT ociated with a hospital. This is not written in any of my plan doents. It cost me $200 to find out this hidden "fine print", and my primary doctor's staff still refers me and my children to the hospital for all tests. I find an optional facility by myself, then call the doc to have a new referral made. Cigna said that my doc probably gets a kickback from the hospital . Anyway, after my $200 lesson, I SAVED $1000 copays for my family this year. Is this feature common with all of the Cigna plans? Is it common with all HMO's? Does everyone know this already?