After several years of experience, Institut de Transtorns Alimentaris (ITA) has become one of the main reference points at the national level, with a comprehensive treatment model and facilities facilitating a continuum of care. In order to make progress in its quality management system, Institut de Transtorns Alimentaris contacted COMTEC with the aim of certifying ISO 9001: 2015, its hospitalization services, day hospital, external consultations and shared flats. This document explains the methodology and the results.