Hello @cbdonlon,

The link below, has resources to help you work through the insurance process with your insurer and with Mayo Clinic; the section on "Guidance for denied claims” might be helpful to you.
https://www.mayoclinic.org/patient-visitor-guide/billing-insurance/insurance
Insurance types
Approval from insurers
Guidance for denied claims
International patients
Uninsured (self-pay) or underinsured patients
Insurance FAQs
Glossary of billing and insurance terms
Contact numbers and online form

You could also call Patient Account Services (toll-free):
– Arizona
800-603-0558
– Florida
800-660-4190
– Minnesota
800-660-4582

And lastly, I would encourage you to visit this FAQ page about appointments and referrals:
https://www.mayoclinic.org/appointments/faq
Meanwhile, I’m tagging @jomama @dreamingingreen @jharsh @gratefulmom @tomewilson @colebernard – a few members who’ve talked about insurance claim denials and strategies in working with insurance in the following discussions:
– Insurance denied my claim https://connect.mayoclinic.org/discussion/insurance-denied-my-claim/
– Insurance Question https://connect.mayoclinic.org/discussion/insurance-question