Copayments did not reduce Medicaid enrollees' nonemergency use of emergency departments

Karoline Mortensen

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


Eager to reduce unnecessary use of hospital emergency departments by Medicaid enrollees, states are increasingly implementing cost sharing for nonemergency visits. This paper uses monthly data from the 2001-2006 Medical Expenditure Panel Surveys (MEPS) to examine how changes in nine states' copayment policies influence enrollees' use of emergency departments. The results suggest that requiring copayments for nonemergency visits did not decrease emergency department use by Medicaid enrollees. Future research should examine more closely the effects at the state level and investigate whether these copayments affected the use of other services, such as hospitalizations or visits to physicians by Medicaid enrollees.

Original languageEnglish (US)
Pages (from-to)1643-1650
Number of pages8
JournalHealth Affairs
Issue number9
StatePublished - Sep 2010
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)


Dive into the research topics of 'Copayments did not reduce Medicaid enrollees' nonemergency use of emergency departments'. Together they form a unique fingerprint.

Cite this