Expediting Formulary Standardization in a Multihospital Health System Using Layered Learners

Drug formularies are a necessary part of medication management in hospitals and health systems. The system-level P&T committee at BJC HealthCare, a multihospital health system in St. Louis, Missouri, developed an approach to standardization of a system-wide formulary using available layered learners to complete the work in an expedited manner before implementation of a system-wide electronic medical record. The formulary standardization work was allocated to reviewers-including pharmacy students, residents, clinical pharmacy specialists, and pharmacy leadership-according to the complexity of the drug class under review, and a pharmacist was assigned to oversee and support the learner (student or resident) as class reviews were performed. The reviewer prepared a review of the drug class, developed recommendations for formulary agents and therapeutic interchanges, and presented recommendations to key stakeholder groups in the organization before a final decision by the system P&T committee. Using this approach, 27 therapeutic class reviews were conducted in 15 months, and 153 of 346 individual agents reviewed (44%) were retained on the formulary. The alignment of formulary medications and interchanges in the 27 classes resulted in an estimated $1.185 million savings in supply costs in the 12 months after implementing the changes. Standardization of the formulary and therapeutic interchanges can be expedited by using a layered learner model, and this model can be used in other health systems to accelerate the formulary review process.