; (ii) meets the clinical conditions for coverage established under paragraph (2) ; and (iii) is furnished by a supplier accredited pursuant to paragraph (3) . (2) Clinical conditions for coverage (A) In general The Secretary shall establish standards for clinical conditions for payment for CRT items under this subsection. (B) Requirements The standards established under subparagraph (A) shall require the following: (i) Written order (I) In general A qualified ordering practitioner shall provide a written order for a CRT item for a qualified individual before the Secretary may provide payment for such item for such individual under this subsection. (II) CRT evaluation In the case of a CRT item that is categorized by the Secretary, for purposes of the program under this title, as a manual wheelchair or a power wheelchair, and is to be provided to a qualified individual who has a diagnosis specified under subparagraph (C) , the qualified ordering practitioner may not provide a written order under subclause (I) unless the qualified individual has undergone a CRT evaluation conducted by a licensed physical therapist or occupational therapist who has no financial relationship with the CRT supplier. The performance of such a CRT evaluation by a licensed physical or occupational therapist shall not be subject (or counted towards) the limitation on certain therapy services under section 1833(g). (ii) Documentation of medical necessity A qualified ordering practitioner who provides a written order under clause (i) shall maintain documentation of the medical necessity of such order for a period of seven years and shall make such documentation available to the Secretary upon request. The documentation of medical necessity under this clause shall include— (I) evidence that the individual for whom the order was written has physical and functional needs and capacities related to a medical condition that meet the eligibility criteria established under section 1861(jjj)(2)(A)(ii)