You can take out the foreign health insurance at any time before the start of the trip – the first day of the trip is at the same time the date of commencement of the insurance. The insurance ends on the last day of the trip.
The term "family" applies to a maximum of two adults and at least one accompanying child (regardless of the family relationship) up to the age of 21 (21st birthday) - totalling up to 7 persons. Note: the family premiums do not apply to two adults without children.
The residence and travel destination must be different. Your place of residence must be Germany.
Take out an individual policy if you often travel by yourself.