The NANDA® –I classification of nursing diagnoses, now a part of the NANDA 360 expanded classifications, represents a cornerstone of professional nursing practice. At its core, the NANDA 360 classification exists to make nursing knowledge visible. By offering standardized, well-defined diagnostic concepts, patient goals and outcomes linked to individual patient assessment data, and evidence-based nursing actions, it enables nurses to consistently articulate their clinical judgments about human responses to health conditions and life processes. This shared language supports safe patient care, strengthens interdisciplinary communication, and advances nursing science worldwide.
Within this work, nursing taxonomy plays a distinct role. Taxonomy II provides the structure that organizes nursing knowledge into meaningful categories, supporting how nurses locate, compare, and apply nursing diagnoses, patient goals/outcomes, and nursing actions across practice settings.
INKA (formerly NANDA International, NANDA-I) maintains and advances Taxonomy II as part of its broader responsibility to steward assessment-driven, diagnosis-centered nursing knowledge for clinical practice, education, research, and digital implementation.
Nursing taxonomy is not abstract theory. It directly affects how nursing knowledge is used in real clinical environments.
A well-designed taxonomy supports nurses by:
Without classification, nursing knowledge remains fragmented, difficult to retrieve, and challenging to communicate. Taxonomy II exists to ensure nursing diagnoses remain usable in everyday practice while also supporting nursing’s long-term scientific development.
An ontology defines the nature of knowledge within a discipline, what concepts exist, how they are defined, and how they relate to one another. In nursing, this includes phenomena such as comfort, coping, mobility, nutrition, and safety, all viewed through the lens of human responses rather than disease processes.
A classification system in nursing denotes disciplinary knowledge and demonstrates how professional nurses perceive what are the significant areas of knowledge of the discipline. It provides a structured method for organizing these concepts. Without classification, nursing knowledge remains fragmented, difficult to retrieve, and challenging to communicate. Taxonomy II serves as a formal structure that organizes nursing diagnoses, patient goals/outcomes, and nursing actions within the NANDA 360 classification into meaningful categories, allowing nurses to locate, compare, and apply standardized nursing terms consistently across practice settings.
Importantly, nursing diagnoses are not arbitrary labels. They are evidence-based clinical judgments that reflect patterns identified through nursing assessment and reasoning. Ontology ensures conceptual clarity, while classification ensures usability and consistency.
Taxonomies are hierarchical systems used to categorize and organize information. They help nurses understand the relationships among various concepts and provide a framework for nursing practice.
Taxonomy II was developed to meet several critical needs within the nursing profession. First, it provides a standardized language for nursing diagnoses (the concepts of concern of the nursing discipline), reducing ambiguity and variation in how nurses describe patient responses. Second, it supports clinical reasoning by helping nurses organize assessment data into recognizable patterns. Third, it facilitates documentation and data aggregation, enabling nursing contributions to be captured within electronic health records and large datasets.
Standardized nursing language is essential for demonstrating nursing’s unique contribution to patient outcomes. When nursing diagnoses are documented using consistent terminology, nursing data can be analyzed, compared, and used to inform quality improvement, staffing decisions, and health policy.
NANDA 360 organizes nursing diagnoses, patient goals and outcomes, and nursing actions within Taxonomy II, a multiaxial structure designed to reflect the complexity of nursing phenomena.
The taxonomy categorizes these classifications into 13 domains that represent broad areas of human response, such as health promotion, nutrition, activity/rest, coping/stress tolerance, safety/protection, comfort, and growth/development. Within each domain, classes further organize these classifications based on shared characteristics or concepts; Taxonomy II has 48 classes, such as infection, physical injury, defensive processes, and thermoregulation.
This organizational structure helps nurses navigate the classification efficiently while reinforcing a holistic view of the patient. For example, in the Coping / stress tolerance domain, within the Coping responses class, a nurse will find the labels that represent those nursing diagnoses, patient goals/outcomes and nursing actions related to anxiety, coping, grieving, fear, resilience, and self-compassion. Rather than focusing on isolated symptoms, Taxonomy II encourages nurses to consider interconnected responses across physical, psychological, social, and spiritual dimensions.
Taxonomy II is not an assessment framework and should not replace comprehensive nursing assessment models such as Gordon’s Functional Health Patterns. Instead, it is a reference tool, used after assessment data have been collected and analyzed.
Nurses begin by identifying patterns within assessment data, formulating diagnostic hypotheses, and then consulting Taxonomy II to confirm the most accurate diagnosis. Each diagnosis includes a label, definition, and diagnostic indicators, which help nurses differentiate between similar diagnoses and validate their clinical judgment.
Nurses are cautioned against selecting diagnoses solely based on medical conditions, care settings, or routine protocols. Nursing diagnoses must always be grounded in individualized assessment and reflect the unique human responses of the patient, family, or community.
Once a diagnosis is made, the nurse can then use Taxonomy II to identify patient goals and outcomes, and nursing actions.
Nursing curricula can be developed around the Concept Focus axis within Taxonomy II, allowing courses to be taught that are based on the core concepts of nursing practice, and which are categorized in each of the domains. Building a curriculum in this manner enables students to truly understand and build expertise in the knowledge of nursing science, while also learning about and understanding related medical diagnoses and conditions which they will encounter in everyday practice. Behavior, relationship, parenting, attachment, role, and social interaction are some of the concepts within Domain 7, Role / relationship, they are the “neutral states” that we must understand before we can identify potential or actual problems within these responses.
Developing nursing courses around these core concepts enables nursing faculty to focus on the knowledge of the nursing discipline and then to incorporate related medical diagnoses and/or interdisciplinary concerns. This enables nurses to focus first on nursing phenomena and then to bring their specific knowledge to an interdisciplinary view of the patient to improve patient care. This content should include realistic patient goals and outcomes, and evidence-based actions that nurses will utilize (autonomous nursing interventions) to provide the best possible care for the patient to achieve outcomes for which nurses have accountability.
Standardized nursing diagnoses, patient goals and outcomes, and nursing actions play a critical role in communication, both within nursing and across the interdisciplinary healthcare team. When nurses use consistent nursing language, it becomes easier to convey patient needs, justify interventions, and coordinate care.
Standardized terminology also enhances patient safety. Clear, accurate diagnoses help ensure that nursing actions target the correct problems or risks, reducing the likelihood of missed care or inappropriate treatment. In transitions of care, such as handoffs or transfers between settings, standardized diagnoses, patient goals/outcomes and nursing actions support continuity and clarity.
NANDA 360 will extend our current classification to incorporate patient goals (at the diagnostic label level) and patient outcomes (at the defining characteristic / risk factor level). These are paired with evidence-based nursing actions, linked directly to the indicators of each nursing diagnosis, and providing a GRADE score for nurses to easily identify the level of evidence available for each particular action.
NANDA 360 will continue to use Taxonomy II to categorize information representing nursing diagnoses, patient goals and outcomes, and nursing actions. This facilitates and streamlines nursing education, clinical application, and interoperability.
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