 METHODS This study covers phases 0, I and II of the Medical Research Council MRC framework for designing and evaluating complex interventions, with a longitudinal, quasi-experimental pretest-posttest design and with mixed methods of evaluation. In phase 0, a systematic literature search is conducted. In phase I, the interRAI PC instrument is adapted for use in Belgium and implemented on the BelRAI-website and a practical training is developed. In phase II, the intervention is tested in fifteen nursing homes. Participating nursing homes fill out the interRAI PC during one year for all residents receiving palliative care. Using a pretest-posttest design with quasi-random assignment to the intervention or control group, the effect of the interRAI PC on the quality of palliative care is evaluated with the Palliative care Outcome Scale POS. Psychometric analysis is conducted to evaluate the predictive validity of the PIM and the convergent validity of the CAP Mood of the interRAI PC. Qualitative data regarding the usability and face validity of the instrument are collected. 