Public consultation is a strategy for patient and public involvement (PPI) assured by the National Committee for Health Technology Incorporation in Brazilian Public Health System (CONITEC)´s normative framework. It aims to obtain society’s views on the matters under evaluation. It is made available after CONITEC issues an initial recommendation, which will be reviewed in light of society contributions. This paper examines the cases where the final recommendations differed from the initial ones in technology assessments carried out between 2012 and 2020, taking into account the arguments used by the CONITEC Plenary to support the modification.

From a total of 361 public consultations referring to the assessment of health technologies carried out by CONITEC between 2012 and 2020, 40 final reports of health technology assessment (HTA) processes that had changes from the initial to the final recommendation were examined. Then, analytical categories were built so that justifications for the change were investigated and the interpretations produced. The empirical approach excluded public consultations regarding clinical protocols and therapeutic guidelines.

It was observed that, in 39 cases, the change occurred from an unfavorable position to a favorable position for the technology incorporation. The main reasons for changing the plenary’s decision were proposals to renegotiate the prices of technologies (that generate changes in the results of economic evaluation and budget impact analysis), the receipt of new evidence and experience, and opinion arguments sent mainly by health professionals.

The analyzed data has shown that the changes in recommendations are mostly based on the content of contributions which led to changes in the assessment of clinical evidence, economic evaluation and budget impact. Thus, it appears that public consultation has been consolidated as a relevant instrument to inform the deliberative process in HTA in Brazilian Public Health System.