42 CFR § 424.123 - Conditions for payment for nonemergency inpatient services furnished by a hospital closer to the individual's residence.
(b) The foreign hospital is closer or more accessible to the beneficiary's residence than the nearest United States hospital equipped to deal with, and available to treat, the individual's illness or injury.
(c) The foreign hospital is -
(2) Accredited by the Joint Commission on Accreditation of Healthcare Organizations (JCAHO) or accredited or approved by a program of the country where it is located under standards the CMS finds to be essentially equivalent to those of the JCAHO.
(d) The services are covered services that Medicare would pay for if they were furnished by a participating hospital.
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