(a)
The United States shall furnish to an employee who is injured while in the performance of duty, the services, appliances, and supplies prescribed or recommended by a qualified physician, which the Secretary of Labor considers likely to cure, give relief, reduce the degree or the period of disability, or aid in lessening the amount of the monthly compensation. These services, appliances, and supplies shall be furnished—
(1)
whether or not disability has arisen;
(2)
notwithstanding that the employee has accepted or is entitled to receive benefits under subchapter
III of chapter
83 of this title or another retirement system for employees of the Government; and
(3)
by or on the order of United States medical officers and hospitals, or, at the employee’s option, by or on the order of physicians and hospitals designated or approved by the Secretary.
The employee may initially select a physician to provide medical services, appliances, and supplies, in accordance with such regulations and instructions as the Secretary considers necessary, and may be furnished necessary and reasonable transportation and expenses incident to the securing of such services, appliances, and supplies. These expenses, when authorized or approved by the Secretary, shall be paid from the Employees’ Compensation Fund.