  Enterprise architecture (EA) has been present in scientific literature since
the 1980s and has branched out into several research fields. EA delivers value
by presenting business and ICT leaders with recommendations for adjusting
policies and projects to achieve business goals. Although there are many works
on the EA application in healthcare systems, the literature lacks studies that
provide a systematic approach to this topic specifically. This work presents a
deep and broad Systematic Literature Review (SLR) to select studies
demonstrating current EA practices in healthcare systems. The researchers
established an SLR protocol returning 280 primary studies after the first step
of the Data Selection and a consolidated inclusion of 46 articles after the
second step. They assessed the level of disagreement during the team's
evaluations using Cohen's Kappa. This SLR revealed essential aspects of
state-of-the-art EA application in healthcare systems, such as the most used
methodologies and tools, best practices, and criteria considered for their
choice. It also analyzed the main positive impacts, challenges, and critical
success factors described by the studies' authors based on empirical
approaches. Besides, this work brings the main publication channels and the
most influential authors on the topic of EA in Healthcare systems.
