Legal analysis: In principle, administrative regions at or above the prefecture level (including prefectures, cities, states, and leagues) are determined to be coordinating units, and counties (cities) with a certain population can also serve as coordinating units.

All units and employees must participate in the basic medical insurance in the coordinating area in accordance with the territorial principle, implement unified policies, and implement unified collection, management and use of basic medical insurance funds.

Legal basis: Article 6 of the "Social Insurance Law of the People's Republic of China" The state exercises strict supervision over social insurance funds.

The State Council and the people's governments of provinces, autonomous regions, and municipalities directly under the Central Government shall establish and improve the supervision and management system of social insurance funds to ensure the safe and effective operation of social insurance funds.

People's governments at or above the county level shall take measures to encourage and support all aspects of society to participate in the supervision of social insurance funds.

Article 7 The social insurance administrative department of the State Council is responsible for the management of social insurance nationwide, and other relevant departments of the State Council are responsible for relevant social insurance work within the scope of their respective duties.

The social insurance administrative departments of local people's governments at or above the county level are responsible for the social insurance management work in their respective administrative regions. Other relevant departments of local people's governments at or above the county level are responsible for relevant social insurance work within their respective scope of duties.