Introduction

This site presents hospitalizations by selected diagnosis for Michigan residents hospitalized in all short-stay hospitals (including Veterans Administration hospitals, but excluding military hospitals) in Michigan, Ohio, Indiana and Wisconsin. These hospitalizations are from the Michigan Resident Inpatient files, 2002-2018, which accounted for approximately 1.3 to 1.21 million hospitalizations annually with about an average length of stay of 4.7 days (see Table 1, below). Hospitalizations are inpatient hospital stays as measured by stays that were completed during the specified year. The number of hospitalizations is often greater than the number of persons hospitalized since some persons are hospitalized more than once during the year.

Table 1. Michigan Resident Hospitalizations
Year Hospitalizations by Year of Discharge Average Length
of Stay (days)
Total Male Female 65 & Over
2019P 1,199,212 532,619 666,578 488,904 4.8
2018 1,217,818 537,870 679,936 491,482 4.7
2017 1,238,557 541,621 696,909 494,139 4.7
2016 1,245,792 541,257 704,522 483,744 4.6
2015 1,250,463 539,173 711,273 481,978 4.6
2014 1,242,639 534,253 708,374 472,584 4.7
2013 1,242,317 532,516 709,788 475,599 4.6
2012 1,267,722 542,058 725,647 481,903 4.7
2011 1,294,784 551,431 743,336 487,965 4.7
2010 1,296,984 548,418 748,545 487,131 4.7
2009 1,318,741 556,018 762,690 489,450 4.6
2008 1,319,818 555,813 763,956 490,907 4.7
2007 1,329,120 562,634 766,451 484,567 4.7
2006 1,337,470 565,352 772,103 483,250 4.7
2005 1,328,172 559,126 769,025 476,742 4.7
2004 1,316,372 548,302 768,043 471,613 4.7
2003 1,306,325 543,847 762,460 466,203 4.7
2002 1,288,561 534,984 753,543 464,734 4.7

The principal diagnosis for each hospitalization was coded according to the International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) for hospitalizations prior to October 1, 2015 and ICD-10-CM for hospitalizations from October 1, 2015 to December 2016. Annually, there were more than 6,500 different principal diagnoses recorded for Michigan patients. These detailed diagnoses were grouped into 42 diagnostic conditions which accounted for 79.3 percent of all hospitalizations. These conditions are selected for tabulations because of stated interest from staff in the public health field, are presented in the National Hospital Discharge Survey summaries, or are among the most frequent hospitalizations. They are grouped and coded to be comparable with those published in the National Hospital Discharge Survey: Annual Summary by the National Center for Health Statistics, U.S. Department of Health and Human Services.

Data Requests

To request hospitalizations by diagnosis data that are not available from this web site, please call (517) 335-8587 or FAX your requests to (517) 335-8711. Requests can also be E-mailed to LeT@Michigan.gov.

Written requests should be sent to:

Thu Le, Senior Statistician
Division for Vital Records and Health Statistics
Michigan Department of Health and Human Services
333 S. Grand Ave.
Lansing MI, 48933

PProvisional number based on 2019 hospitalizations reported as of December 2020.


Last Updated: 12/05/2020