Larry,

Have your dentist or ENT write the letter...they can use all the phrases that need to be included. Did you have BCBS when you were undergoing treatment...that might help establish the need. Even if you didn't, you can still show what your dx and treatments entailed. You have xerostomia, a result of radiation to your parotids..plain and simple. If you go to the main OCF site and into the link for dental issues after treatment, you should have lots of ammunition for your letter. But, I would first ask the docs to write the supporting letter.

Deb