Kernrechtsfrage
Whether the city had standing to bring a third-party complaint for denial of justice and to demand an appealable decision from the insurer.
Extrahierter Entscheid
Yes. The city had a sufficient specific and direct legal interest because the KVV rules on premium collection and suspension expressly linked the insurer's rights to prior notification and possible payment by the social authority.
Extrahierte Begründung
The court held that third-party standing under ATSG requires a concrete, direct, and special relationship to the dispute. Here, unlike ordinary social-aid interest, the city was specifically addressed by the federal rules governing premium arrears, collection costs, and suspension of benefits, and the insurer had actually sought payment from the social authority.