The cities of Beijing, Tianjin and Shanghai and the provinces of Jiangsu, Fujian, Guangdong and Hainan will take part in the pilot test that was launched in July, the Ministry of Commerce said in a statement on Wednesday.

The private healthcare sector is a magnet for investors with the number of private hospitals shooting up in the last decade as Beijing looks to take the pressure off its hard-hit state run system.

China's healthcare spending is set to hit $1 trillion (0.60 trillion pounds) by 2020, according to McKinsey & Co, a major draw for hospital operators such as Singapore-based Raffles Medical Group Ltd (>> Raffles Medical Group Ltd.), Malaysia's IHH Healthcare Bhd (>> IHH Healthcare Bhd) and U.S.-listed Chindex International Inc (>> Chindex International, Inc.).

Beijing has been slowly opening the door to overseas money, previously allowing foreign investors to own 70 percent stakes in hospital joint ventures. Full ownership had been allowed in areas including Hong Kong, Macau and Taiwan.

The attraction is clear. There were 11,300 private hospitals in China last year, a massive rise from just 3,200 in 2005, according to a Deutsche Bank report in June. It added that a further 8,000 public hospitals were likely to be privatised over the next 5-10 years.

Approvals for foreign-owned hospitals will be overseen by provincial governments, the Ministry of Commerce said, adding that only investors from Macau, Taiwan and Hong Kong can practice traditional Chinese medicine (TCM).

The Ministry of Commerce announcement did not include any requirements for a minimum size of foreign investment.

Chinese hospitals suffer from a lack of funding and a steep gap between urban and rural care, often leading to high rates of bribery and simmering tension between patients and doctors.

Widespread graft has made it harder for China's poor to get access to healthcare, despite Beijing ordering hospitals to not turn away patients who need emergency treatment.

The move is also part of sweeping plans to reform the world's second-largest economy to give private and foreign investors greater access to enhance efficiency, technological know-how and coverage for basic services such as healthcare.

China had promised earlier this year to relax limits on foreign investment in hospitals on the mainland in a healthcare reform plan for 2014. In May, the government also eased restrictions on foreign investment in joint-venture hospitals.

(Reporting by Shao Xiaoyi and Koh Gui Qing in BEIJING and Adam Jourdan in SHANGHAI; Editing by Jacqueline Wong)