Nursing Interventions Classification (NIC), a comprehensive, standardized system to classify treatments performed by nurses. It is a clinical tool developed by a research team at the University of Iowa that describes and defines the knowledge base for nursing curricula and practice. There are at present 554 nursing interventions that describe the treatments nurses perform. Each intervention has been labeled, defined, and given a list of appropriate activities. The full range of activities that nurses perform on behalf of patients is included, both independent and collaborative interventions and both direct and indirect care. A taxonomy is provided to help the nurse find what is most relevant to her or his practice area. NIC interventions have been linked to NANDA diagnoses. It is considered part of the clinical decision making of the nurse to decide and document the nursing diagnoses, desired outcomes, interventions used, and outcomes achieved. The NIC system provides a standardized language to document interventions.