postcode lottery
noun [ C ] uk/ˈpəʊst.kəʊd ˌlɒt.ər.i/ us/ˈpoʊst.koʊd ˌlɑː.t̬ɚ.i/
（英国）地域性公共服务差异（人们能获得的医疗类型、所享受的政府服务类型等均与其居住地区有关）
in the UK, a situation in which the type of medical treatment you can have, the type of government services you receive, etc. depends on which part of the country you live in