Total (or national) expenditure on health is based on the following identity and functional boundaries of medical care:
Personal health care services + Medical goods dispensed to outpatients = Total personal expenditure on health + Services of prevention and public health + Health administration and health insurance = Total current expenditure on health + Investment into medical facilities = Total expenditure on health.

Another formula is: total expenditure on health = private health care expenditure + public health care expenditure.

World Health Organization. European Observatory on Health Systems and Policies. Glossary. 2009.