Hi everybody!
I saw this great article about claims submission and documentation requirements for Medicare patients who receive ambulance services. It's a great reference although it was issued by CGS so other carriers details and guidelines may differ. If you don't use CGS, it's still a great reference but make sure to confirm if you carrier guidelines differ in any way.
http://www.cgsmedicare.com/ohb/pubs/news/2014/0314/cope25070.htmlHappy reading!