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Unified Medical Language System® (UMLS®)

2009AA Minimum Data Set Source Information

The Institute of Gerontology, University of Michigan, Ann Arbor, Michigan produces the Minimum Data Set (MDS). The MDS included in the Metathesaurus is extracted from LOINC® and may not be a complete representation of the original source.

MDS is a standardized assessment used in the United States to evaluate nursing home residents' functional capability and clinical status with the goal of focusing treatment plans. MDS is required to be completed for residents in certified Medicare and Medicaid facilities.

MDS is a standardized, comprehensive instrument that includes an extensive list of assessments such as demographics, fractures, falls, behavior/depression, cognitive status, medications, incontinence, infections, nutrition, dehydration, and activities of nursing home residents.

Metathesaurus Scope
The Metathesaurus representation of MDS is extracted from LOINC and includes terminology representing the 'questions' aspect of the source.

MDS is used by health care professionals and clinical managers.

Metathesaurus Update Frequency
MDS is updated in each Metathesaurus release as part of LOINC.

Sites Consulted

  1. Fries, Brant E. New Opportunities for Research in Cognitive Aging: The National Nursing Home Resident Assessment Instrument [Internet]. Gainesville (FL): American Psychological Association, Division 20; [August 2008]. Available from:
  2. Minimum Data Sets 2.0 [Internet]. Baltimore (MD): Centers for Medicare & Medicaid Services. MDS Applicability; [modified 2008 Sep 15; cited 2008 Oct 09]. Available from:
  3. Tuttle MS, Weida T, White T, Harvell J. Washington (DC): Department of Health and Human Services (US); [2007 April 23]. Standardizing the MDS with LOINC® and Vocabulary Matches; [cited 2008 Oct 09]. Available from:

Last Reviewed: February 17, 2011