AARP Hearing Center
Yes that is correct and it is for 6 years. The list though of what will require prior authorization at this point in time is pretty short.
If you care to grit your teeth (as I know some of chose original medicare rather than an advantage plan because we didn't have to deal with referrals and prior authorizations for most things)
https://www.cms.gov/priorities/innovation/innovation-models/wiser
https://www.cms.gov/files/document/wiser-fact-sheet.pdf
These are the states involved: Arizona, New Jersey, Ohio, Oklahoma, Texas, and Washington
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