Kernrechtsfrage
Whether compulsory health insurance began on the date of residence in Switzerland despite a handwritten later start date on the application.
Extrahierter Entscheid
The insurance had to begin by operation of law on 2017-06-01 for the appellant and 2017-06-30 for his wife and children; the handwritten later date was irrelevant.
Extrahierte Begründung
Under Art. 3 KVG and Art. 5 KVG, a person who joins within three months after taking up residence is insured retroactively from the date the insurance duty arises. The start date is statutory, not subject to party agreement.