In the process of any human right exercising there is always an issue related to the quality of received service or aid especially in the healthcare sector. Authors analyzed applicable legislation of Ukraine regulating the provision of medical aid and services with the use of the following methods –analysis, interpretation, hermeneutics, systemic-structural. During the research were analyzed applicable legislation which contains medical aid and service definitions and peculiarities of its regulation. According to the results of regulatory framework analysis,we can state that definitions “medical aid” and “medical service” are mutually reinforcing as medical aid comprises relevant procedures. Comparison of these phenomena also can be performed based onother criteria, namely: subjective composition (professional medical staff will always bethe provider, in case of emergency cases –persons whose duty is to provide primary medical aid as part of their activity; medical services are provided by state and municipal facilities along with higher educational establishments and research centers, i.e. not only medical staff; payment (regarding the subject –free of charge or paid; services are paid per se except if covered by relevant budget category); financial guarantee (both processes are guaranteed by the state except special cases and if medical insurance program is selected).