Legal basis: According to the provisions of Article 28 of the Social Insurance Law, medical expenses that meet the basic medical insurance drug list, diagnosis and treatment items, medical service facilities standards and emergency rescue shall be paid by the basic medical insurance fund in accordance with state regulations. According to the provisions of Article 29 of the Social Insurance Law, the part of the medical expenses of the insured that should be paid by the basic medical insurance fund shall be directly settled by social insurance agencies, medical institutions and pharmaceutical business units. The administrative department of social insurance and the administrative department of health shall establish a settlement system for medical expenses in different places to facilitate the insured to enjoy the basic medical insurance benefits. According to the provisions of Article 30 of the Social Insurance Law, the following medical expenses are not included in the payment scope of the basic medical insurance fund: (1) those that should be paid by the industrial injury insurance fund; (2) It shall be borne by a third party; (three) shall be borne by public health; (4) Go abroad for medical treatment. Medical expenses that should be borne by a third party according to law. If the third party is unable to pay or cannot determine the third party, the basic medical insurance fund will pay in advance. After the basic medical insurance fund pays in advance, it has the right to recover from the third party.