"Notice 2019-45 expand[s] the preventive care safe harbor to allow predeductible HDHP coverage of specific medications and supplies for certain chronic conditions. According to the agencies, the added items are low-cost and clinically proven to keep a chronic condition from getting worse or triggering a secondary condition that is expensive to treat. The agencies also claim there is 'medical evidence supporting the high cost efficiency (a large expected impact) of preventing exacerbation of the chronic condition or the development of a secondary condition.' "