Be sure to continue reading through 517.18(B) for the number of receptacles and the requirements for how they are served from the circuits in 517.18(A), this may help explain the intent.
Basically there must be receptacles from both the Normal and Critical branches available for use at the bed, this is over and beyond any dedicated receptacles for items such as the bed for example.
As an aside, these must be HG receptacles and they must have an Equipotential of less than .01 ohm per NFPA 99 4.3.3.1.6.2, the meter used should be a medical/bio type analyzer and may be scrutinized closely be the AHJ
Roger
