Hospital means a facility that -
(1) Is primarily engaged in providing, by or under the supervision of doctors of medicine or osteopathy, inpatient services for the diagnosis, treatment, and care or rehabilitation of persons who are sick, injured, or disabled;
(2) Is not primarily engaged in providing skilled nursing care and related services for patients who require medical or nursing care, as described in section 1861(j)(1)(A) of the Act;
(3) Provides 24-hour nursing service in accordance with section 1861(e)(5) of the Act; and
(4) Is licensed, or is approved as meeting the standards for licensing, by the State or local licensing agency.
42 CFR § 424.101
As used in this subpart, unless the context indicates otherwise -