In 1973 the First National Conference on the Classification of Nursing Diagnoses was held in St. Louis, Missouri which created the National Conference Group, a task force to standardize nursing terminology. In 1982 NANDA was formed including members from the United Statesand Canada.
NANDA developed a nursing classification to organize nursing diagnoses into different categories. Although the taxonomy was revised to accommodate new diagnoses, in 1994 it became apparent that an overhaul was needed. In 2002 Taxonomy II, which was a revised version of Gordon's functional health patterns, was released.
In 2002, NANDA became NANDA International in response to requests from its growing base of membership from outside North America. The acronym of NANDA was retained in the name because of the name recognition, but it is no longer merely "North American", and in fact boasts members from 32 countries as of 2010.