OBJECTIVES: The aim of our study is to analyze the annual health insurance reimbursement cost of spa services and its distribution according to the type of services in Hungary. METHODS: The data is derived from Hungarian National Health Insurance Fund Administration (OEP), the only health care financing agency in Hungary. We analyzed the annual treatment of 2007 and its health insurance cost. We identified the following spa services with health insurance reimbursement in Hungary: spa pool of medical water, tub-bath of medical water, mud pack, medicinal weight-bath, effervescent-bath, medical health massage, sub-aquean spray massage, sub-aquean health care gymnastics for groups, complex balneotherapeutical service, health swim therapy for groups under 18. We calculate the annual health insurance reimbursement of different kind of spa services and its distribution. RESULTS: 8,16 million treatments of medical spa were done in Hungary at 2007 and OEP spent 4,434 billion HUF (Hungarian Forint) for reimbursement of these interventions. This sum of money is equal to 0,617 % of medicinal-prevention cost (718,717 billion HUF). The annual health insurance reimbursement of the single spa services and its distributions was the follows: spa pool of medical water (1144 million HUF, 25,81%), tub-bath of medical water (5,4 million HUF, 0,12%), mud pack (369,6 million HUF, 8,34%), medicinal weight-bath (96,4 million HUF, 2,17%), effervescent-bath (58,1 million HUF, 1,31%), medical health massage (1291 million HUF, 29,11%), sub-aquean spray massage (471,3 million HUF, 10,63%), sub-aquean health care gymnastics for groups (321,9 million HUF, 7,26%), complex balneotherapeutical service (404,9 million HUF, 9,13%), health swim therapy for groups under 18 (271,6 million HUF, 6,13%). CONCLUSIONS: The cost of spa services is 0,617 % of medicinal-prevention cost in Hungary. The greatest items are medical health massage and spa pool of medical water.