OBJECTIVES: To evaluate the activity of the outpatient care physiotherapy services in Hungary, according to the International Classification of Diseases (ICD) code system. METHODS: Data were derived from the countrywide database of Hungarian Health Insurance Administration (HHIA), based on official reports of outpatient care institutes in 2008. The total number and the distribution of physiotherapy services were evaluated according to all of 21 ICD code groups for the year 2008. The different types of treatment codes are listed in the chapter of the Guidelines of HHIA for `Physiotherapists, massage-therapists, conductors and other physiotherapy practices`. RESULTS: The total number of physiotherapy services provided in 2008 was 28943680 interventions, of which the 20 most frequent treatments accounts for 72.03 % (20848928) of total services. The three ICD groups with the highest number of cases were found as the followings: 1) Diseases of the musculoskeletal system and connective tissue (60.74%); 2) Injury and poisoning (10.50%); and 3) External causes of morbidity and mortality (6.29%). CONCLUSIONS: The physiotherapy services occurred with the highest incidence in cases of the `diseases of the musculoskeletal system and connective tissue` ICD group. Therefore, authors suggest structuring the health care system and distributing resources to follow the needs supported by our findings.