Legal analysis: The National Drug Catalog of Basic Medical Insurance divides drugs into three categories: Category A, which can all be included in the scope of medical insurance reimbursement and is reimbursed according to the proportion of medical insurance; Category B, which requires individuals to first pay certain fees to use such drugs.

After part of the cost is borne proportionally, the remaining part will enter the scope of medical insurance reimbursement and be reimbursed according to the medical insurance proportion; in the third category, Category C, this part of the medicine will not be reimbursed and will be fully borne by the individual.

Legal basis: Article 41 of the "Regulations on Basic Medical Insurance for Urban Employees of the People's Republic of China and the State", the provincial labor and social security administrative department shall, in accordance with relevant national regulations, jointly determine the basic medical insurance in conjunction with the planning, economic and trade, finance, health administration, and drug supervision and management departments.

Insurance drug catalog.

The provincial labor and social security administrative department shall, in accordance with relevant national regulations, determine the catalog of basic medical insurance diagnosis and treatment items, the scope of medical service facilities and payment standards in conjunction with the planning, finance, health administration, and drug supervision and management departments.

The cost pooling fund shall not pay for the use of drugs, diagnosis and treatment items, and medical service facilities that are not covered by basic medical insurance.