postcode lotteryˈpostcode ˌlottery noun [singular] British English 
a situation in which different things or services are provided by the health service, local government etc in different parts of the country – used to show disapproval: 
Some sufferers are denied treatment because of the postcode lottery.
a situation in which different things or services are provided by the health service, local government etc in different parts of the country – used to show disapproval: Some sufferers are denied treatment because of the postcode lottery.