Heather, we had the doctor write a regular prescription, noting Mark's pancreatic insufficency (there is an ICD 9/diagnosis code, don't recall at this moment though) on the actual RX form, as well as attach a letter about his dietary requirements due to CF/pancreatic insufficency and malabsorption. Took that to the pharmacy and they billed the insurance for it. Sometimes it's tricky to find a pharmacy that will bill for it because most often they have to "manual" or "paper" bill, and not all pharmacies do that or are willing to do that anymore.
I'd get the Rx, call around to various pharmacies asking if they will bill an ins. company for Pediasure (many pharmacies will tell you no because it's available over the counter, tell them it's Rx'd by your child's doctor because of CF and malabsorption). Many may tell you no, keep trying. I know in our area, Rite Aid, Safeway (also Vons) and Walgreens refused to bill ins. or order our Boost for us. But the local "arlington Family pharmacy" down the street was more than eager to do it for us. Not a hitch in the last 6 months.
