INTEGRATING VA’S NDF-RT DRUG TERMINOLOGY WITH PHARMGKB: PRELIMINARY RESULTS JYOTISHMAN PATHAK, PhD Department of Health Sciences Research, Mayo Clinic 200 1 st Street SW, Rochester, MN, USA Email: pathak.jyotishman@mayo.edu LAURA C. WEISS * Bethel University 3900 Bethel Drive, St. Paul, MN, USA Email: laura-weiss@bethel.edu MATTHEW J. DURSKI, BS Department of Health Sciences Research, Mayo Clinic 200 1 st Street SW, Rochester, MN, USA Email: durski.matthew@mayo.edu QIAN ZHU, PhD Department of Health Sciences Research, Mayo Clinic 200 1 st Street SW, Rochester, MN, USA Email: zhu.qian@mayo.edu ROBERT R. FREIMUTH, PhD Department of Health Sciences Research, Mayo Clinic 200 1 st Street SW, Rochester, MN, USA Email: freimuth.robert@mayo.edu CHRISTOPHER G. CHUTE, MD, DrPH Department of Health Sciences Research, Mayo Clinic 200 1 st Street SW, Rochester, MN, USA Email: chute@mayo.edu Abstract Biomedical terminology and vocabulary standards play an important role in enabling consistent, comparable, and meaningful sharing of data within and across institutional boundaries, as well as ensuring semantic interoperability. The Veterans Affairs (VA) National Drug File Reference Terminology (NDF-RT) is a federally recommended standardized terminology resource encompassing medications, ingredients, and a hierarchy * This work was done while the author was a summer intern at Mayo Clinic.