As a provider of basic insurance, INTRAS Kranken-Versicherung AG merged with Arcosana AG as of 1 January 2022. One year later Arcosana AG went on to merge with CSS Kranken-Versicherung AG. CSS Kranken-Versicherung offers insured persons identical insurance models and the same services as Arcosana. In the supplementary insurance business, INTRAS Versicherung AG merged with CSS Versicherung AG. Its supplementary insurance products were taken over unchanged by CSS Versicherung AG.