China has reported almost 60,000 COVID-related deaths since early December after the country dropped its strict lockdown restrictions.
The announcement follows complaints that the Chinese government was failing to release data about the status of the pandemic.
China dropped its strict zero COVID policy on 7 December, leading to a surge in infections among the population which has little immunity after the Chinese government focused on shielding its population rather than inoculation.
Beijing said the "emergency peak" of its latest coronavirus surge appeared to have passed.
The 59,938 people that died in hospitals between 8 December and 12 January had an average age of 80.3.
Of those, 5,503 were caused by respiratory function failure due to COVID infection, while 54,435 resulted from a combination of diseases and coronavirus, officials said.
The report would more than double China's official COVID-19 death toll to 10,775. The number stood at 5,272 on 8 Jan. January.
More on Covid-19
Officials said COVID fever and emergency hospital admissions had peaked, with the number of coronavirus patients in hospital continuing to decline.
However, China said those "deaths related to COVID" occurred in hospitals, leaving open the possibility more people may have died at home.
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Long queues at funeral homes
Nationwide, "the number of fever clinic visitors is generally in a declining trend after peaking, both in cities and
rural areas," Jiao Yahui, an official from the National Health Commission, told a news conference.
Ms Jiao said the number of emergency treatment patients was also declining and the ratio of patients who had tested positive for COVID-19 was steadily dropping as well.
Wen Daxiang, a Shanghai Health Commission official, said China would strengthen health monitoring and management of its high-risk population and bolster the supply of drugs and medical equipment in rural areas.
Authorities had been reporting five deaths or fewer each day over the past month – despite long queues at funeral homes and body bags seen leaving crowded hospitals.
Last month, officials said they planned monthly updates rather than daily ones.
How is the UK responding?
The UK announced it would test random passengers on direct flights from mainland Chinato the UK for COVID-19.
The UK Health Security Agency (UKHSA) said its new programme would see "a sample of passengers arriving in England from mainland China tested for COVID-19 at the point of their arrival".
The agency said passengers at Heathrow would be invited to take part in the study and all positive samples sent for sequencing.
While China reported nearly 60,000 COVID-related deaths in just over a month, the UK has seen nearly 178,000 deaths within 28 days of a positive test since the UK began recording COVID-related deaths.