The NHS is well-known around the world for providing free basic healthcare to all but this will change by March 2014, when the UK government will set out detailed plans on how overseas visitors and migrants will be charged for services.
The move is aimed at tackling health tourism, especially by a growing number of visitors from nearby European Union countries.
The Accidents and Emergency (A&E) department will still be open to all in an emergency but there will be a bill to pay afterwards for patients from overseas.
There are also plans to introduce a new system of identifying and recording patients who should be charged for NHS services.
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Consultations with general practitioners (GPs) and nurses will remain free, which the government believes will reduce risks to public health such as HIV, TB and sexually transmitted infections.
"Having a universal health service free at the point of use rightly makes us the envy of the world, but we must make sure the system is fair to the hardworking British taxpayers who fund it," said Health Minister Lord Howe.
"We are already looking at taking action and next year we will set out our detailed plans to clamp down on the abuse of our NHS," he said.
The announcement follows a Department of Health study that estimated up to 500 million pounds could be recovered from overseas visitors' and migrants' use of the NHS every year.
"We cannot have a situation where any patient with a serious health need is deterred from visiting a GP, especially if their condition raises a potential public health risk," cautioned Chaand Nagpaul, who leads the British Medical Association's GP committee.