The paper presents the experience of rehabilitation treatment for servicemen who had suffered from acute nonrheumatic myocarditis. The treatment was conducted in the 1469 Naval Clinical Hospital of the Northern Fleet with using an 8-modular system of medical rehabilitation activities: a laboratory-diagnostic cluster with a patient’s rehabilitation and expert evaluation and a rehabilitation prognosis; drug therapy, diet therapy, psychosomatic diagnosis and correction of the emotional state; therapeutic exercise with restoration of physical performance and adaptive health parameters; information cluster — providing the patient with a complete and accessible understanding of information about a healthy lifestyle; physiotherapeutic non-pharmacological correction of physiological disorders, activation of endogenous protective systems of the body; functional diagnostics complex: a study of restoration of functioning parameters for cardiovascular and respiratory systems, the development of the body’s adaptation to physical exertion. As a result of using the modular system, a decrease in the average bed-day during the rehabilitation phase for patient after mild acute myocarditis was 16,6% (from 17,5±1,3 to 14,6±2,7 days); after moderate myocarditis — 8.1% (from 22,3±2 to 20.5±1,8 days); and after severe — 5,9% (from 27,2±3,5 to 25,6±1,2 days). The rehabilitation program, which has been developed basing on principles of the theory of modules, is a dynamic, easily simulated system with a combination of variable and permanent elements, that allows to reduce the cost of treatment and rehabilitation in mild myocarditis by 10,6±0,9%, in moderate myocarditis — by 7,2±0,8%, and in severe myocarditis — by 3,7±0,4%.