Medicare MBI Transition Period is Ending 1-1-2020!

https://www.cms.gov/Outreach-and-Education/Medicare-Learning-Network-MLN/MLNMattersArticles/downloads/SE18006.pdf Starting January 1, 2020, even for services provided before this date, you must use MBIs. With a few exceptions, Medicare will reject claims you submit with Health Insurance Claim Numbers (HICNs.) Medicare will reject all eligibility transactions you submit with HICNs.