As reported by Forbes Magazine:

In July of 1798, Congress passed – and President John Adams signed – “An Act for the Relief of Sick and Disabled Seamen.” The law authorized the creation of a government operated marine hospital service and mandated that privately employed sailors be required to purchase health care insurance.

Keep in mind that the 5th Congress did not really need to struggle over the intentions of the drafters of the Constitutions in creating this Act as many of its members were the drafters of the Constitution.