Introduction The ICF classification describes, based on categories, functioning at the body level (disability), people (activities) and people in society (participation) taking into account the environmental factors. ICF tools were developed based on ICF Core Set for the management of the rehabilitation process. Aim This publication, based on a case study, presents a proposal for a set of categories for functional assessment of the upper limb for patients with subacromial impingement syndrome and a proposal for intervention by individual members of the rehabilitation team. Material and methods We present a retrospective study (analysis of medical records) of a 55-year-old woman hospitalized in the Out Patient Ward of the Rehabilitation Clinic because of left shoulder pain not caused by injury. The rehabilitation tretament provided to this patient included 5 patient management components : examination, evaluation, prognosis, diagnosis, and intervention using the ICF-based documentation tool. Results After rehabilitation, resting pain in the shoulder girdle (from VAS 8 to VAS 3) decreased, muscle strength increased ( from 4 to 5 on the Lovett scale) and range of movement without pain, no changes in shoulder imaging results were noted. The patient regained partial independence in self-service activities. She still had trouble performing her upper limb elevation. Conclusions The ICF classification enables effective global and specific goals of the rehabilitation program, as well as facilitates planning the intervention of individual members of the rehabilitation team. The presented case report was the first clinical study on the use of ICF in the shouldertight syndrome.