The present study aimed to identify the therapeutic interventions categories carried out in Intensive Care Units (ICU), finding out their prevalence and identifying their components according to TISS-28. The sample was composed of 89 adult patients who were consecutively admitted to the ICU of a university hospital in São Paulo city. Basic and Supportive Activities, Ventilatory, Cardiovascular and Renal were the TISS-28 that prevailed with a frequency of 73.0% and 100%. The frequency of the items considered Basic Activities were prevalent, that is, higher than 90.0%. The quantitative average of urinary debt was 98.2% concerning Renal Support. The results may mean quality of assistance provided to the clients, as they contribute to the human resources estimative and materials in the ICU as well.