Introduction. The hematology service registration system describes actual indicators of hematology service infrastructure and target objects of both assigned and affiliated organizations of Russian Federation regions along with its correlations. This system data base makes it possible to collect, save, and analyze information, creating a data storage library about all current existing resources and taking into account concrete, specific conditions of specialized and high-tech hematological medical assistance organizations at the local levels and formed quality and availability optimization proposals.Aim — description and justification of the need to create a unified, complex, available to all users, informational reference system with the possibility of up-to-date maintenance and accounting that allows for the keep and control of the regional characteristics and hematology service indicators of the Russian Federation.General findings. The creation of and development of the hematology service registration system began in 2018, and work on the project continues. Four main phases were selected as the key stages of the hematology service pasportisation: analyses of the current data, verification of information, creation of a user-friendly tool, system updating. Objects to monitor: medical key and related institutions, universities, affiliated organizations, laboratory service. The data working stages: data collection, manual updating, package uploading. The information sources: official websites, data high-tech medical treatment web portal, web portals of the public health authorities, Compulsory Medical Insurance Fund website, The Unified Data Health Care System, license register of the Federal Service for Healthcare Surveillance, data of the Federal State Statistics Service, official documents of Ministry of Public Health. Based on the developed checklists and forms for entering additional information for specialists of the subjects of the Russian Federation, a reference book of the Ministry of Defense (Excel file format) was created. However, in the course of further remote interaction and conducting field events in the regions of the Russian Federation during 2019–2020 new data needs for evaluating hematology services were determined. The increase of additional data inputs and its structure complication became the main reasons for further developing a new platform design concept and data conversion in database framework of the hematology service registration system (Access file format). The current objectives are as follows: authentication of the internal objects identifiers, implementation of the relational database codifier, modification of cartographic display and objects routing. The hematology service registration system contains data both for the key infrastructure nodes of Russian Federation hematology service and correlations within routing of all key system objects. Based on the positive results, the hematology service registration system is planned to be used by experts of specialized medical organizations, regional executive authorities on public health and professional communities, who will be able to accumulate all changes and indicators in dynamics within one system. The expected result is to provide the Ministry of Defense of the Russian Federation regions with methodological and informational support in specialized and high-tech medical care administration.