In the last decade, there has been enormous development in the SP600125 implementation of standardized languages in Nursing Care Plans for nursing diagnoses and interventions. In Spain since 1998, these taxonomies have been progressively incorporated into normal clinical practice and Computerized Clinical Records. However, there is still no common language in Spanish nursing practice. The implementation of SNCP care plans allow for increased practicality and efficiency in nursing data management, but the potential relationship between nursing interventions and patients health outcomes remains uncertain. The aim of the study was to evaluate the effectiveness of implementing SNCP in CCR registration in the improvement of metabolic, weight, and blood pressure control of patients with T2DM after two–year follow-up. The SNCP followed NANDA and NIC taxonomies. The present study showed that patients in the SNCP group reached a significant reduction in DBP, at the two-year follow-up, compared to patients in the UNC group. However, a reduction in DBP values has little clinical relevance. SNCP group demonstrated a favourable trend toward the glycemic control in previously poorly controlled patients, after adjusting for age, gender, and type of treatment. The main predictors variables were treatment with oral antidiabetic agents, and insulin treatment; that previously, in our country, had been associated with glycemic control. Preceding studies have shown that the implementation of standardized languages in nursing care plans enhances the quality of documented patient assessments, the identification of commonly occurring diagnoses within similar settings, and coherence among nursing diagnoses, interventions and outcomes, but that better documentation did not necessarily lead to better patient care outcomes. Some studies in hospital settings, examined the relationship between the implementation of standardized languages and patient’s outcomes. However, there is a gap in the literature about the potential relationship between the implementation of standardized languages in nursing care plans and health outcomes for chronic patients in primary health care settings. One meta-analysis of nine trials that included 1,846 patients showed limited evidence that standardized electronic documentation of nursing diagnosis and related interventions led to better health outcomes. The utilization of standardized languages in nursing care plans may be interpreted as an organizational intervention aimed at improving the process of care or patient outcomes. In a systematic review, which included nine studies of organizational interventions in patients with diabetes, there was no evaluation of the effectiveness of SNCP or nursing diagnoses. For this reason, our study cannot be compared with similar efficacy studies. The patients in the SNCP group had a greater risk profile. This is consistent with the findings of Paans et al. who identifies that one of the factors associated with the use of nursing diagnoses is the complexity of a patients situation. For this reason, we adjusted for baseline differences with a multivariate analysis, in spite of this there is still a possibility of bias in favor of the null hypothesis. The study sample was composed of patients with T2DM who regularly visited primary health care centers. This may not be representative of the entire T2DM patient community. However, the prevalence of diabetes mellitus recorded in the 31 participating primary health care centers is similar to that found in a population based study carried out in our city.