Authority
The U.S. National Library of Medicine (NLM) produces the Metathesaurus CMS Formulary Reference File (MTHCMSFRF), which is based on the Centers for Medicare & Medicaid Services (CMS) Formulary Reference File (FRF).
Purpose
The FRF is a listing of drugs that CMS Part D plan sponsors must utilize in the submission of Part D formularies to CMS for review.
Metathesaurus Scope
MTHCMSFRF includes a subset of eight terms from the CMS FRF. It is included in each Metathesaurus Release as part of RxNorm.
Sites Consulted