• Olafur O Gudmundsson, Gudmundur Hjaltalin, Haukur Eggertsson, and Thora Jonsdottir.
• The Social Insurance Administration.
• Laeknabladid. 2021 Dec 1; 107 (12): 575580575-580.

IntroductionThe disability assessment standard based on medically recognized illnesses or disabilities was introduced in Iceland 1999. The aim of this study is to examine the development of Social Insurance Administration (Tryggingastofnun ríkisins, TR) rulings regarding rehabilitation and disability pensions over a twenty-year period, since its introduction.Material And MethodsAll registered diagnoses in the medical certificates of TR due to the approved rehabilitation or disability pension were examined in the period 2000-2019. The gender distribution and age distribution of these applicants and the number development during the period are described. At the same time, costs as a percentage of government expenditure are examined.ResultsThe number of younger rehabilitation pensioners has increased rapidly in recent years, at the same time as the relative increase in disability pensioners has slowed slightly. Mental and musculoskeletal disorders are by far the most common types of illness leading to disability. Mental illnesses differ in terms of age distribution and increase over time. The proportion of individuals aged 18-66 with a 75% disability assessment has increased by a third during the period, from about 6% to 8%. The gender distribution of disability pensioners remains similar, with women accounting for 62% in total. Women are much more likely to receive disability pension due to musculoskeletal disorders than men and men are somewhat more likely to suffer from mental illness. The relative development of central government expenditure on total payments to rehabilitation and pensioners continues to grow as a proportion of central government expenditure.ConclusionThe number of rehabilitation pensioners has increased significantly since 2018, at the same time as the number of disability pensioners has decreased and there are indications that rehabilitation results in a lower number of new disability pensioners. Mental and musculoskeletal disorders are by far the most common types of illness leading to disability. A slightly lower proportion of disabled people have psychiatric diagnosis as a first diagnosis in the period 2000-2019 compared to those with a valid disability assessment in 2005, but the proportion of musculoskeletal disorders is slightly higher. Nevertheless, mental illnesses differ in age distribution and increase over time.

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