Cost-sharing in the form of a set proportion of the cost of a service.
The patient pays a fixed proportion of the cost of a service, with a third party paying the remaining proportion.
World Health Organization. European Observatory on Health Systems and Policies. Glossary. 2009.
A form of medical cost sharing in a health insurance plan requiring that an insured person pays a stated percentage of medical expenses after the deductible amount, if any, was paid.