1. Each licensed retail pharmacy shall keep such records as may be necessary to determine gross retail prescription receipts.

2. The director of revenue may prescribe the form and contents of any forms or other documents required by this section.

3. Each licensed retail pharmacy shall report the gross retail prescription receipts to the department of revenue.

4. The department of revenue shall provide the department of social services with the information that is necessary to implement the provisions of sections 338.500 to 338.550.

5. The information obtained by the department of social services from the department of revenue shall be confidential and any employee of the department of social services who unlawfully discloses any such information for any other purpose, except as authorized by law, shall be subject to the penalties specified in section 32.057.