Can be distinguished based on coverage.

The characteristics of Category A and Category B invoices are as follows:

1. Category A, all basic medical categories are covered, and 100% can be reimbursed.

2. Category B, basic medical care is not fully covered. This will vary from region to region. Generally, there is a "self-care ratio" column behind the "price" column of some hospitals' invoices that require personal payment. The proportion that needs to be paid by the individual will be indicated. Some might be 10%, some 5%, some 3%, some 0%.

The advantages of all-electric invoices are as follows:

1. Traditional invoices require a tax control disk or UKEY, but all-electric invoices do not. Invoices can be issued anytime and anywhere as long as there is Internet access.

2. Traditional invoices require various determinations of tax types and amounts, but the operation process of all-electric invoices is relatively simpler and more convenient.

3. Traditional invoices contain various information, including company name, tax ID, bank, address, phone number. Some companies forget to modify the information when their information changes, but all-electric invoices only have company name and tax ID.