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The International Dietetics and Nutrition Terminology (IDNT) was developed by the American Dietetic Association for use by Registered Dietitians (RD) within the four steps of the Nutrition Care Process and Model (NCPM).


First published in 2003, the Nutrition Care Process and Model (NCPM) is a problem-solving model for nutrition care, and includes four steps: nutrition assessment, nutrition diagnosis, nutrition intervention, and nutrition monitoring and evaluation. Although primarily used in the clinical setting, NCPM can be applied in any setting where nutrition intervention takes place.


IDNT provides a standardized set of over 450 terms to reflect each step of NCPM. IDNT is a controlled vocabulary that promotes consistency of care as well as facilitating documentation within the electronic health record. Within each step of NCPM there are multiple domains:

  1. The first step, nutrition assessment, includes five domains
    1. food/nutrition related history
    2. anthropometric measurements
    3. biochemical data
    4. medical terms and procedures
    5. nutrition-focused physical findings, and client history
  2. The second step, nutrition diagnosis, includes three domains:
    1. intake
    2. clinical
    3. behavioral/environmental
  3. Nutrition intervention is the third step and includes four domains:
    1. food and/or nutrient delivery
    2. nutrition education
    3. nutrition counseling
    4. coordination of nutrition care
  4. The fourth step, nutrition monitoring and evaluation, includes four domains:
    1. food/nutrition-related history
    2. anthropometric measurements
    3. biochemical data, medical tests and procedures
    4. nutrition-focused physical findings.

Joint alliances

IDNT is currently being mapped to the Systematized Nomenclature Of Medicine Clinical Terms (SNOMED CT), and in the future, mapping to other terminologies will be explored. With inclusion of IDNT in electronic health records, nutrition services provided by the RD will facilitate a clear and consistent documentation of that intervention and provide easy access to recommendations for the physician. Most importantly, use of IDNT will facilitate study of outcomes of nutrition intervention. With seven of the ten leading causes of death in the United States being related to nutrition, gathering these outcomes data is timely and imperative.

Submitted by Martin Yadrick