The reimbursement of medicines by the Spanish National Health System (NHS) is based on a set of criteria included in the Royal Legislative Decree 1/2015 (RDL 1/2015). The Interministerial Committee on Pricing of Medicines and Healthcare Products (CIPM) is responsible for the final price and reimbursement (P&R) decision, including on its resolutions the criteria listed in the law by which the reimbursement of a drug is approved or denied. Nevertheless, the information behind its reasoning is not provided. The present study aims to characterize the P&R criteria of the RDL 1/2015 through criteria definitions from other countries to improve the P&R evaluation in Spain.

A multidisciplinary experts panel with relevant experience in drug evaluation and decision making at national, regional, and local level in Spain was selected for this study. A literature review to characterize the criteria listed in the RDL 1/2015 was performed based on the most relevant and recognized Health Technology Assessment (HTA) agencies in Europe, UK, and Canada. Eventually, a feasibility study was performed to evaluate the novel drug cefiderocol using the characterized criteria, including a reflective discussion of the results.

Consensus was reached among the multidisciplinary experts on the characterization of the criteria set by the law. The feasibility of their application to a new drug was exploratory, notwithstanding it showed the potential to improve the transparency as well as to offer a more structured rationale for the CIPM to evaluate the inclusion of new drugs in the Spanish NHS.