; and (ii) is furnished by a supplier accredited pursuant to subparagraph (D) and meets the supplier and quality standards specified under subparagraph (C). (B) Clinical conditions for payment (i) In general The Secretary shall establish standards for clinical conditions for payment for CRT items under this subsection. (ii) Requirements The standards established under clause (B)(i) shall require the following: (I) Written order A qualified ordering practitioner, as defined in section 1861(mmm) of the Act, shall provide a written order for a CRT item for a specific 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, the qualified ordering practitioner may not provide a written order under subclause (I) unless the 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). (III) Documentation of medical necessity A qualified ordering practitioner who provides a written order under subclause (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 evidence that the individual for whom the order was written has medical, physical, and/or functional needs and capacities that require the use of the prescribed CRT item. (IV) Coverage In developing the standards under subparagraph (B), the coverage of CRT items shall be based on the individual’s specific medical, physical, or functional needs and capacities