I receive masshealth, and was approved for prior authorization for my opiate meds ( I have cancer) and though I was approved thru March 20 2015 , the last script I brought in to fill on March 2nd wasn't approved for prior authorization and pharmacist told me I needed my oncologist to fill out a new prior authorization...she said it had something to do with early pickups ( occasionally I picked up scripts a day or two early , what does this mean ? I'm assuming when masshealth approved me it doesn't necessarily go by the date , but approves for a certain quantity in the 6 months that I was approved for ...is this correct?