This study investigated the impact of baseline frailty on mortality and recovery outcomes in long-stay ICU patients. A retrospective cohort study of 531 patients hospitalized for ≥7 days in the ICU between May 2018 and May 2021 found that frail patients (CFS ≥5) had higher mortality rates (34.3%) compared to pre-frail (21%) and non-frail (13.1%) patients at 6 months. Frailty was associated with increased mortality and poorer physical health-related quality of life (QoL) but not with mental health-related QoL. Frail patients were more likely to require nursing assistance at home and had lower physical component scores on the SF-12 questionnaire. The study highlights the importance of frailty assessment in ICU patients, as it can inform discussions about survivorship and goals of care. The Clinical Frailty Scale (CFS) is a reliable tool for assessing frailty in ICU settings. The findings suggest that frailty is a significant factor in long-term outcomes for long-stay ICU patients, emphasizing the need for tailored care and support for these individuals.This study investigated the impact of baseline frailty on mortality and recovery outcomes in long-stay ICU patients. A retrospective cohort study of 531 patients hospitalized for ≥7 days in the ICU between May 2018 and May 2021 found that frail patients (CFS ≥5) had higher mortality rates (34.3%) compared to pre-frail (21%) and non-frail (13.1%) patients at 6 months. Frailty was associated with increased mortality and poorer physical health-related quality of life (QoL) but not with mental health-related QoL. Frail patients were more likely to require nursing assistance at home and had lower physical component scores on the SF-12 questionnaire. The study highlights the importance of frailty assessment in ICU patients, as it can inform discussions about survivorship and goals of care. The Clinical Frailty Scale (CFS) is a reliable tool for assessing frailty in ICU settings. The findings suggest that frailty is a significant factor in long-term outcomes for long-stay ICU patients, emphasizing the need for tailored care and support for these individuals.