Only in very limited situations.
In
2016, the Centers for Medicare and Medicaid Services (CMS) updated
their Prescription Drug Manual and added some guidance for the
exceptional circumstances when formulary medications purchased from
foreign sources can be covered by your Medicare Part D plan.
In Section
10.7 - "Drugs
Purchased in Another Country", CMS notes that:
"Part D sponsors
must exclude Part D drugs from qualified prescription drug coverage if they are not sold in the United States.
In addition, Part D sponsors may only pay for drugs that satisfy the
definition of Part D drug. In general, such definition requires FDA
approval for sale in the United States. Therefore, even if the
manufacturer has FDA approval for a drug, the version produced for
foreign markets usually does not meet all of the requirements of the
U.S. approval, and thus it is considered to be
unapproved.
[
However,
i]n the event of a drug shortage, in order to ensure access to
critically needed drugs in conjunction with the actions taken by the
FDA, CMS will accept PDE [prescription drug event] submissions with
national drug codes [NDCs] for foreign versions of Part D drugs,
imported under the FDA’s exercise of its enforcement discretion.
PDE [prescription drug event] allowances will be limited to the
specific drug product(s), conditions, and the duration of the shortage
as specified by the FDA.
Such products cannot be discounted under the Medicare Coverage Gap Discount Program."
[emphasis and links added]
Source:
Medicare Prescription Drug Benefit Manual
Chapter 6 – Part D Drugs and Formulary Requirements
(Rev. 18, Issued: 01-15-16, Effective: 01-15-16; Implementation: 01-15-16)
https://www.cms.gov/ Medicare/ Prescription-Drug-Coverage/ PrescriptionDrugCovContra/ Downloads/ Part-D-Benefits-Manual-Chapter-6.pdf