Subject. This article examines operational indicators that help monitor healthcare. Objectives. The article aims to develop and test a methodological approach to the creation of the theory of indicators, which can help assess the applicability of data for monitoring the state of healthcare. Methods. For the study, I used control (Shewhart) charts developed in accordance with the requirements of GOST R ISO 7870-2-2015 – Statistical Methods. Control Charts. Part 2. Shewhart Control Charts. Results. The article shows that information about the volatility of cash flows characterizes additional features reflecting the state of the object under study, namely healthcare. Relevance. The results of the study can be used as part of the creation of a system for operational monitoring of healthcare in the Russian Federation. The developed methodological approach to the creation of the theory of indicators can be applied by authorities that use indicators in their activities. Further research can be aimed at expanding the number of operational health indicators, as well as developing a comprehensive theory of indicators.