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Frailty provides a vital window into the baseline vulnerability of a patient, yet it remains underutilized in acute triage despite its established prognostic value. Current evidence demonstrates that integrating frailty measures, specifically the Clinical Frailty Scale (CFS), with existing severity scores significantly improves mortality prediction and risk stratification in emergency and critical care. This mini-review explores age-related physiological changes as well as the prognostic limitations of standard severity scores while evaluating their integration with validated frailty tools. To bridge current clinical gaps, we propose a practical 4-step clinical triage algorithm integrating a baseline \u201cTwo-Week Rule\u201d CFS with acute severity scores via  a synergistic 2 \u00d7 2 risk stratification matrix. 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