Nursing and other related services, use of hospital facilities, and medical social
            services ordinarily furnished by the hospital for the care and treatment of inpatients
            are covered under hospital insurance.
         
          The services of a private-duty nurse or other private-duty attendant are not
               covered. Private-duty nurses or private-duty attendants are registered professional nurses,
            licensed practical nurses, or any other trained attendant whose services ordinarily
            are rendered to, and restricted to, a particular patient by arrangement between the
            patient and the private-duty nurse or attendant. Such persons are engaged or paid
            by an individual patient or by someone acting on their behalf, including a hospital
            that initially incurs the costs and looks to the patient for reimbursement for such
            noncovered services.
         
         When the hospital acts on behalf of a patient, the services of the private-duty nurse
            or other attendant under such an arrangement are not inpatient hospital services regardless
            of the control which the hospital may exercise with respect to the services rendered
            by such private-duty nurse or attendant.
         
         If the hospital engages the services of a nurse anesthetist or other nonphysician
            anesthetist (either on a salary or fee-for-service basis) under arrangements which
            provide for billing to be made by the hospital, the cost of the service when provided
            to an inpatient would be covered under Part A.