modifier 25 and 27 - help

Critical Access Hospital (CAH), Medicare Claims Processing Manual, forget the CPT code book even though you are looking at CPT codes for the clinic visits, lab, and x-ray.  Ok.  Ok.  So freaking confused right now.  When I was trained, they told me any clinic or ER that did an x-ray, EKG, injection, procedure, put a modifier 25 on it.  Period.  Well, after doing some research modifier 25 states SAME PHYSICIAN...Come to find out not all x-rays, just CT, MRI...My main problem is they are telling me modifier 25 for the hospital does not matter if it's the SAME PHYSICIAN.  It does not matter who did the orders.  Forget the description of the modifiers that you find in the code books.  What the heck?  I think maybe modifier 27 for hospital encounter multiple done same day...

So, I emailed compliance officer and she told me to forget about the CPT code book.  It does not apply here.  It only applies to physician offices not the hospital.  But, she just gave us a description of modifier 25 and it does not state SAME PHYSICIAN anywhere in the description like in the coding books.  She said, by the way, certified coders gave this information to her...none of us are certified - yet.  She is using the medicare Claims Processing Manual and tells me to ignore the outpatient stuff even though I am coding clinics, labs, and x-rays done at the hospital.  Could anybody help me figure this out please?  This is driving me crazy.