The article analyzes first results of the functioning of the psychiatric service as a result of the introduction of a cluster-modular system into its organizational structure on the example of the State Budget Healthcare Institution “Psychiatric Clinical Hospital No. 13 of the Moscow City Health Department”. This study was conducted using the methods of study and generalization of experience, sociological, comparative and statistical analysis. The main performance indicators of the units of the cluster-modular system of the State Budgetary Institution “PKB No. 13 DZM” for 2015-2019 are studied. © 2021, Rossiiskaya Akademiya Nauk, Institut Istorii (Russian Academy of Sciences, Institute of General Hist. All rights reserved.