The customer service rep states that the venipuncture is included in the charge for the GHP which is not indicated in the CPT code book and all other insurance companies except Wells Fargo Insurance Svcs & Aetna pay as separate charges. Generally, I appeal with copies of the CPT code book indicating that they are billable separately but there is nothing in the book one way or the other. It's the interpretation that I'm fighting here so I'm trying to find something concrete to use in an appeal.