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Measuring Q of a hospital
Diagnosis-procedure-combination (DPC) classification
for acute hospitals in Japan and its application for risk-
adjustment for in-hospital mortality
Etsuji Okamoto
(National Institute of Public Health)
Japanese hospitals
Well equipped
The world-longest ALOS
OECD Health at A Glance 2013
Good treatment for CVA
Lowest rescue rate of AMI
Fee-for-service (FFS):
mainstay of Japan’s reimbursement
• 1961 Universal coverage
• FFS through uniform fee schedule
• 1980s rapid increase of geriatric hospitals
• notorious for excessive medication, IV as shown below
• 1983 “bundling” of inpatient IV
• 1990 per diem reimbursement for geriatric hp
• 1990s growing interests in fixed payment in
acute care and long-term care.
• 2000 LTCI (incl:geriatric hps)
Prelude
• Central Social Insurance Health Care
Committee (advisory board for the minister
on fee schedule setting) proposed “case-
payment” to hospitals in February 1996.
• MHW proposed a trial of “per-diem” by
specialty (not based on patients’ diagnosis)
reimbursement to the CSIHCC on 28th
August
1996. This proposal was not realized.
Feasibility study of US DRG
to Japanese hospitals
• by Institute of Health Economics & Policy (IHEP) in
1997 in collaboration with 3M HIS, inc.
• 17 large hospitals, 121543 cases (ICD9) discharged
in 1996.
• verified HCFA-DRG(elderly, 492 groups), All
patient-DRG(including pediatric patients, 641
groups), APR-DRG(refined, 1530 groups, copy-
righted by 3M HIS, inc)
• Conclusions: feasible with AP-DRG.
pilot study
• MHW proposed a pilot study of “per-case”
reimbursement based on ICD9B classification
(approximately 100 groups) to public hospitals.
• The Committee on the Pilot Study of Fixed-
reimbursement for Acute Hospitals (chair: Akira
Matsuda, director of National Institute of Hospital
Management) convened on 18th
July 1997.
• Uncertainty about the feasibility and concerns
about effects on the quality of care (note: there
were concerns on DRG in the U.S.)
Structure of DPC coding
DPC-PDPS(perdiem payment system)
April 2003
• Officially introduced to participating hospitals
• Differentiate it as perdiem payment from US DRG
case-payment system
• Perdiem cost is reduced in 3 stages
Getting more complicated
MDC17 (psychiatric), MDC18 (others) added in 2008
Increase of DPC participating hospitals
Share of DPC in acute care beds
Reimbursement before/after DPC
Shortened ALOS

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DPC20140314

  • 1. Measuring Q of a hospital Diagnosis-procedure-combination (DPC) classification for acute hospitals in Japan and its application for risk- adjustment for in-hospital mortality Etsuji Okamoto (National Institute of Public Health)
  • 4. The world-longest ALOS OECD Health at A Glance 2013
  • 7. Fee-for-service (FFS): mainstay of Japan’s reimbursement • 1961 Universal coverage • FFS through uniform fee schedule • 1980s rapid increase of geriatric hospitals • notorious for excessive medication, IV as shown below • 1983 “bundling” of inpatient IV • 1990 per diem reimbursement for geriatric hp • 1990s growing interests in fixed payment in acute care and long-term care. • 2000 LTCI (incl:geriatric hps)
  • 8. Prelude • Central Social Insurance Health Care Committee (advisory board for the minister on fee schedule setting) proposed “case- payment” to hospitals in February 1996. • MHW proposed a trial of “per-diem” by specialty (not based on patients’ diagnosis) reimbursement to the CSIHCC on 28th August 1996. This proposal was not realized.
  • 9. Feasibility study of US DRG to Japanese hospitals • by Institute of Health Economics & Policy (IHEP) in 1997 in collaboration with 3M HIS, inc. • 17 large hospitals, 121543 cases (ICD9) discharged in 1996. • verified HCFA-DRG(elderly, 492 groups), All patient-DRG(including pediatric patients, 641 groups), APR-DRG(refined, 1530 groups, copy- righted by 3M HIS, inc) • Conclusions: feasible with AP-DRG.
  • 10. pilot study • MHW proposed a pilot study of “per-case” reimbursement based on ICD9B classification (approximately 100 groups) to public hospitals. • The Committee on the Pilot Study of Fixed- reimbursement for Acute Hospitals (chair: Akira Matsuda, director of National Institute of Hospital Management) convened on 18th July 1997. • Uncertainty about the feasibility and concerns about effects on the quality of care (note: there were concerns on DRG in the U.S.)
  • 12. DPC-PDPS(perdiem payment system) April 2003 • Officially introduced to participating hospitals • Differentiate it as perdiem payment from US DRG case-payment system • Perdiem cost is reduced in 3 stages
  • 13. Getting more complicated MDC17 (psychiatric), MDC18 (others) added in 2008
  • 14. Increase of DPC participating hospitals
  • 15. Share of DPC in acute care beds