USP DC 2020

"An up-to-date and well-established classification resource can assist stakeholders in managing their drug formulary more efficiently. USP, a non-profit organization develops public compendial quality standards and solutions, including two drug classification systems: the Medicare Model Guidelines (MMG) for Part D plans and USP Drug Classification (USP DC) for non-part D plans. " https://www.usp.org/health-quality-safety/usp-drug-classification-system#:~:text=The%20freely%20accessible%20version%20of,USP%20Drug%20Classification%20PLUS