The aim of this study was to develop the documentation of the substance of nursing care on the basis of a theoretical caring process model. The theory is Eriksson's caring process model and her theory of health, suffering and caring. The approach of the research task was dialogue. As a research method Koski's adaptation of Gadamer's theory of hermeneutic experience was used, in which Gadamer's hermeneutic text interpretation is divided into four phases. The phases are the explicit analysis of preunderstanding, hermeneutic dialogue, the merging of horizons and active application. The dialogue is carried on between Eriksson's theory of health, suffering and caring and clinical nursing practice and between the caring process model and nursing practice. The goal is to achieve a new scientific view on which to base the documentation of nursing care. As a result of the dialogue a classification in accordance with Eriksson's caring-process model is presented. In the next phase of the study the classification is piloted in a clinical context. The purpose is to obtain knowledge of whether the suggested classification describes what, according to the theory, it should describe.