All medical reviews include Physician's opinion and breakdown of medical necessity, causation, undocumented charges and usual & customary. All questions, concerns and comments are addressed. When bills total more than $50,000 and/or there are extensive records, our cost will vary. We must also take into consideration that some cases include affidavits under that 1 invoice. Also; in some instances we will not know expert's fee until the review is completed. Whenever possible we will send notification when the invoice (or 2 invoices, doctor and NAC) will exceed $2,500. Pre-approval from requestor will be obtained before handling, when requested.