; or (B) the Secretary determines that a standard unique health identifier included in such data in accordance with such requirement is not active or is otherwise invalid. (3) Definition of designated item or service For purposes of this subsection, the term designated item or service means any of the following: (A) An item of durable medical equipment. (B) A prosthetic or orthotic device. (C) A clinical diagnostic laboratory test. (D) A diagnostic imaging test (as specified by the Secretary). (E) A home health service (as specified by the Secretary). . (c) Identification of relationships between telehealth suppliers and telehealth companies under Medicare Section 1834(m) of the Social Security Act ( 42 U.S.C. 1395m(m) ) is amended by adding at the end the following new paragraph: (10) Identification of relationships between telehealth suppliers and telehealth companies (A) In general In the case of a telehealth service furnished on or after the date of the enactment of this paragraph by a specified entity, no payment may be made under this section for such service unless the claim for such service includes the modifier established pursuant to subparagraph (B). (B) Establishment of modifier Not later than 90 days after the date of the enactment of this paragraph, the Secretary shall establish a claims modifier for purposes of identifying telehealth services payable under this section furnished by a specified entity (as defined in subparagraph (C)). (C) Definitions In this section: (i) Specified entity The term specified entity means a physician or practitioner (as such terms are defined in paragraph (4)) that has an employment or other contractual relationship in effect with a telehealth company relating to the furnishing telehealth services. (ii) Telehealth company The term telehealth company means an entity— (I) that employs or otherwise contracts with physicians or practitioners to furnish telehealth services