Clinical assessment of 'rehabilitation potential' is an everyday occurrence in hospitals, where scarcity of dedicated rehabilitation facilities require clinicians to decide who is most likely to benefit from extended rehabilitation. We examined the reliability of this judgement by different interdisciplinary team members in 27 consecutive admissions to a geriatric rehabilitation ward. The reliability of a clinical judgement was in general quite poor (kappa = 0.21). A more reliable means of determining patient 'rehabilitation potential' is needed.