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HCUP Facts and Figures
Statistics on Hospital-Based Care in the United States, 2009
TABLE OF CONTENTS

HIGHLIGHTS

INTRODUCTION

HCUP PARTNERS

1. OVERVIEW

2. DIAGNOSES

3. PROCEDURES

4. COSTS

5. WOMEN'S HEALTH

SOURCES/METHODS

DEFINITIONS

FOR MORE INFO

ACKNOWLEDGMENTS

CITATION

FACTS & FIGURES 2009 PDF
EXHIBIT 4.5 Cost by Diagnostic Category (PDF)

4.5a

Distribution of aggregate costs by diagnostic category, 2009. Pie chart. Circulatory system: 20%; Musculoskeletal system: 13%; respiratory system: 11%; digestive system: 9%; nervous system: 7%; all other conditions: 39%. Total aggregate costs: $361.5 billion. Note: Diagnostic categories are based on principal diagnosis defined by Major Diagnostic Category (MDC). Source: AHRQ, Center for Delivery, Organization, and Markets, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample, 2009.


  • Circulatory conditions accounted for the largest share of hospital costs (20 percent) in 2009.
  • Additional diagnostic categories responsible for large portions of hospital costs included:
    • Musculoskeletal conditions (13 percent),
    • Respiratory conditions (11 percent),
    • Digestive conditions (9 percent), and
    • Nervous system conditions (7 percent).


4.5b

Aggregate Costs and Percent Distribution for Each Payer by Diagnostic Category,† 2009
  MEDICARE MEDICAID PRIVATE
INSURANCE
UNINSURED* OTHER**
  COSTS IN BILLIONS (PERCENT)
Total cost $165.7
(100.0%)
$55.2
(100.0%)
$109.8
(100.0%)
$17.8
(100.0%)
$12.3
(100.0%)
Circulatory system $43.6
(26.3%)
$6.2
(11.2%)
$18.5
(16.8%)
$3.2
(17.8%)
$1.8
(14.7%)
Musculoskeletal system $23.3
(14.1%)
$3.2
(5.7%)
$17.1
(15.6%)
$1.3
(7.4%)
$2.8
(22.7%)
Respiratory system $23.0
(13.9%)
$5.7
(10.3%)
$8.6
(7.9%)
$1.7
(9.5%)
$1.0
(8.3%)
Digestive system $16.2
(9.8%)
$3.8
(6.9%)
$10.7
(9.8%)
$1.9
(10.4%)
$1.0
(7.8%)
Nervous system $11.4
(6.9%)
$3.5
(6.4%)
$7.4
(6.7%)
$1.5
(8.3%)
$0.9
(7.2%)
All other conditions $48.2
(29.1%)
$32.9
(59.6%)
$47.4
(43.2%)
$8.3
(46.5%)
$4.8
(39.3%)
† Based on principal diagnosis defined by Major Diagnostic Category (MDC).
* Includes stays classified as self-pay or no charge.
** Includes other payers such as Workers' Compensation, TRICARE, CHAMPUS, CHAMPVA, Title V, and other government programs.
Source: AHRQ, Center for Delivery, Organization, and Markets, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample, 2009.


Costs by diagnostic category varied by payer, as did the distribution of costs.

  • Stays for circulatory conditions accounted for the largest share of hospital costs for Medicare (26.3 percent), private insurance (16.8 percent), and the uninsured (17.8 percent).
  • Stays for musculoskeletal conditions accounted for larger shares of hospital costs for Medicare (14.1 percent) and private insurance (15.6 percent) than for Medicaid (5.7 percent) and the uninsured (7.4 percent).

4.5c

Distribution of aggregate costs by payer for selected diagnostic categories, 2009. Column chart. Percent distribution. Circulatory system. Other: 2%; uninsured: 4%; private insurance: 25%; Medicaid: 8%; Medicare: 60%. Musculoskeletal system. Other: 6%; uninsured: 3%; private insurance: 36%; Medicaid: 7%; Medicare: 49%. Respiratory system. Other: 3%; uninsured: 4%; private insurance: 22%; Medicaid: 14%; Medicare: 57%. Note: Diagnostic categories are based on principal diagnosis defined by Major Diagnostic Category (MDC). Note: Other includes other payers such as Workers' Compensation, TRICARE, CHAMPUS, CHAMPVA, Title V, and other government programs. Note: Uninsured includes stays classified as self-pay or no charge. Note: Each diagnostic category excludes a small percentage of stays (0.2%) with missing payer that have a small percentage of missing costs (0.2%). Source: AHRQ, Center for Delivery, Organization, and Markets, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample, 2009.


  • The majority of costs for circulatory conditions (60 percent) were billed to Medicare. One-quarter of circulatory system costs (25 percent) were covered by private insurance. Medicaid was billed for 8 percent of the costs and 4 percent were for the uninsured.
  • About half (49 percent) of the costs for musculoskeletal conditions were for stays with Medicare as primary expected payer. Stays covered by private insurance accounted for 36 percent of these costs while just 7 percent of the costs were for stays covered by Medicaid.
  • The majority of costs for respiratory conditions (57 percent) were billed to Medicare. Private insurance and Medicaid were respectively billed for 22 percent and 14 percent of the aggregate costs.

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Internet Citation: Facts and Figures 2009. Healthcare Cost and Utilization Project (HCUP). November 2011. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/reports/factsandfigures/2009/exhibit4_5.jsp.
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Last modified 11/9/11