Since 1 January 2020, the Cancer Registration Act (CRA; SR 818.33) and the associated ordinance (CRO; SR 818.331) have been in force. The national law regulates patient protection, the obligation to report cancer, the use of the OASI number as a personal identifier, as well as the standardisation of the dataset, registration and data transmission.

The purpose of the CRA is to improve the basis of the data for monitoring the development of cancer. The collected data is also used to develop, implement and review prevention and screening programs, to evaluate the quality of care, diagnosis and treatment, and to support care planning and research.