1. Then do patients have to get a referral from the provider in order to get the chiro treatments?2. Is there initial & re-evaluation for chiro? if yes, then what are they?3. For some other plans, where do I have to get the authorization?Since you said 'this is all pretty elementary', I assume that you're billing for chiro for years.Thank you for the information you posted. Your continuous replies with information will help me alot.