; (ii) there was an irreparable change in the condition of the CRT item (or, in the case of the replacement of a part, in the part of the CRT item); or (iii) the CRT item requires repairs and the cost of such repairs would be more than 50 percent of the cost of a replacement of the CRT item. (B) Deferral to providers (i) In general Subject to clause (ii) , if a qualified ordering practitioner determines that a replacement of the CRT item, or the replacement of a part of a CRT item, is necessary pursuant to subparagraph (A), the replacement item or part is deemed to be reasonable and necessary for purposes of section 1862(a)(1)(A). (ii) Exception for items under 3 years old If the CRT item that is being replaced (or the part of the CRT item that is being replaced) under subparagraph (A) is less than 3 years old (calculated from the date on which the qualified individual began to use the CRT item or part), the Secretary may require the qualified ordering practitioner to provide confirmation of necessity of the replacement item or replacement part, as the case may be. (7) Payment for temporary rental (A) In general If a CRT item owned by a qualified individual needs to be repaired, payment may be made under this subsection for the temporary rental of a CRT item while the CRT item owned by such individual is being repaired. (B) Basis