Covered items (as defined in section
1395m
(a)(13) of this title) for which payment would otherwise be made under section
1395m
(a) of this title, including items used in infusion and drugs (other than inhalation drugs) and supplies used in conjunction with durable medical equipment, but excluding class III devices under the Federal Food, Drug, and Cosmetic Act [
21 U.S.C.
301 et seq.] and excluding certain complex rehabilitative power wheelchairs recognized by the Secretary as classified within group 3 or higher (and related accessories when furnished in connection with such wheelchairs).