The research carried out resulted in the proposal to create a hybrid methodology between two topics such as RCM and PMBOK applied to the management o f critical equipment maintenance in the biomedical area in health service providers (IPS) o f medium complexity o f the city o f Cúcuta, Colombia. The hybrid methodology is based on a five-phase project structure, with overall management and tactical activities, deliverable documents for biomedical maintenance management (GMB) and more for GMB activity documentation, recommended tools and techniques for the implementation o f activities, in addition to recommended guidelines and formats, where this was applied directly in four medium complexity Health Service Providers (IPS) Institutions o f Cúcuta-Colombia, in which product of the professional and teaching experience o f the author o f this research with the design and execution of maintenance plans based on reliability for these institutions, are considered as case studies since they have the design basis o f the RCM in three o f them and the fourth is presented as a pilot where the hybrid model to be designed was implemented from scratch.