25 U.S.C. § 1621l - U.S. Code - Unannotated Title 25. Indians § 1621l. Patient travel costs

(1) an adult escort (including a parent, guardian, or other family member) who is required because of the physical or mental condition, or age, of the applicable patient;

(2) a health professional for the purpose of providing necessary medical care during travel by the applicable patient; or

(3) other escorts, as the Secretary or applicable Indian Health Program determines to be appropriate.

(1) emergency air transportation and non-emergency air transportation where ground transportation is infeasible;

(2) transportation by private vehicle (where no other means of transportation is available), specially equipped vehicle, and ambulance; and

(3) transportation by such other means as may be available and required when air or motor vehicle transportation is not available.