title: Part D and dually eligible patients with mental illness: medication access problems and use of intensive services.
abstract: OBJECTIVE
  This study examined the occurrence of medication access problems and use of intensive mental health services after the transition in January 2006 from Medicaid drug coverage to Medicare Part D for persons dually eligible for Medicaid and Medicare benefits.
  
  
  METHODS
  Psychiatrists randomly selected from the American Medical Association's Physicians Masterfile reported on experiences of one systematically selected dually eligible patient (N=908) in the nine to 12 months after Part D implementation. Propensity score matching was used to compare use of psychiatric emergency department care and inpatient care between individuals who experienced a problem accessing a psychiatric medication after Part D and those who did not.
  
  
  RESULTS
  Approximately 44% of dually eligible patients were reported to have experienced a problem accessing medications. The likelihood of visiting an emergency department was significantly higher for those who experienced an access problem than for those who did not (mean odds ratio=1.75, mean p=.003). There was no difference in number of emergency department visits or hospitalizations for those who had at least one.
  
  
  CONCLUSIONS
  Many dually eligible patients had difficulty accessing psychiatric medications after implementation of Part D. These patients were significantly more likely to visit psychiatric emergency departments than patients who did not experience difficulties. These findings raise concerns about possible negative effects on quality of care. Additional study is needed to understand the full effects of Part D on outcomes and functioning as well as treatment costs for this population.
authors.affiliation: Department of Health Care Policy, Harvard Medical School, 180 Longwood Ave., Boston, MA 02115, USA. huskamp@hcp.med.harvard.edu
authors.forename: Haiden A
authors.initials: HA
authors.lastname: Huskamp
authors.forename: Joyce C
authors.initials: JC
authors.lastname: West
authors.forename: Donald S
authors.initials: DS
authors.lastname: Rae
authors.forename: Maritza
authors.initials: M
authors.lastname: Rubio-Stipec
authors.forename: Darrel A
authors.initials: DA
authors.lastname: Regier
authors.forename: Richard G
authors.initials: RG
authors.lastname: Frank
mesh_terms: D000328:Adult; D000368:Aged; D003422:Critical Care; D004608:Eligibility Determination; D005260:Female; D019538:Health Care Surveys; D006297:Health Services Accessibility; D006801:Humans; D008297:Male; D008484:Medicaid; D054524:Medicare Part D; D001523:Mental Disorders / Q000188:drug therapy*; D008875:Middle Aged; D014481:United States