Current legislation on paid medical services is characterized by lack of systematic legal regulation of these relations, presence of gaps and contradictions. Rules for provision of paid medical services to population by medical institutions, directly regulating contractual relations have not been changed since their adoption in 1996, do not fully meet current needs and need to be reviewed and updated, taking into account already established practice of provision of paid medical services. Like any legal novelty, the contract for paid medical services needs theoretical study and comprehension, development of evidence-based recommendations to improve the legislation and practice of its application.