Fully updated and revised by editors T. Heather Herdman, Shigemi Kamitsuru, and Camila Takáo Lopes, NANDA International Nursing Diagnoses: Definitions and Classification, 2024-2026, 13th Edition is the definitive guide to nursing diagnoses, as reviewed and approved by the NANDA International (NANDA-I) Diagnosis Development Committee (DDC). In this new edition of a seminal text, the editors have provided a more in-depth discussion on diagnosis and its linkage to assessment, using Kamitsuru's Tripartite Model of Nursing Practice to differentiate between interdependent interventions based on medical and organizational standards of care, and autonomous nursing interventions based on nursing standards of care. Functional Health Patterns are used as an assessment framework to guide nurses in collecting relevant data to drive accuracy in nursing diagnosis.