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Patient Days of Care and Average Length of Stay
By Twenty Leading Diagnoses for Hospitalizations
Michigan Residents, 2020

(View Number of Hospitalizations and Rate per 10,000 Population)

(View ICD-9-CM & ICD-10-CM)
 All Hospitalizations 1,074,727 5,503,784 5.1
 Heart Diseases 112,542 566,376 5.0
 Newborns and Neonates (Less than 7 days) 104,684 368,013 3.5
 Females with Deliveries 97,296 239,682 2.5
 Injury and Poisoning 90,814 528,769 5.8
 Septicemia 75,162 587,103 7.8
 Covid-19 34,378 262,472 7.6
 Cerebrovascular Diseases 30,623 205,982 6.7
 Cancer (Malignant Neoplasms) 29,969 207,944 6.9
 Hypertensions 25,640 158,994 6.2
 Arthropathies 25,313 47,815 1.9
 Diabetes Mellitus 22,096 109,163 4.9
 Mood (affective) Disorders 21,412 161,794 7.6
 Pneumonia 18,080 90,406 5.0
 Renal Failure 16,578 91,257 5.5
 Diseases of the Skin and Subcutaneous Tissue 14,653 70,163 4.8
 Care Involving Use of Rehabilitation Procedures 12,084 72,252 6.0
 Chronic Obstructive Pulmonary Disease & Bronchiectasis 11,680 49,096 4.2
 Mental and Behavioural Disorders Due to Alcohol 11,287 51,879 4.6
 Schizophrenia, Schizotypal & Delusional Disorders 10,354 119,841 11.6
 Anaemias 9,034 40,427 4.5
 All Other Hospitalization Conditions 326,688 1,633,350 5.0


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 a year.

Days of Care are the number of patient days accumulated at the time of discharge by a patient. A stay of less than 1 day is counted as 1 day in the summation of total days of care. For patients admitted and discharged on different days, the number of days of care is computed by counting all days from (and including) the date of admission to (but not including) the date of discharge.

Average Length of Stay are the number of days of care accumulated at the time of discharge by patients hospitalized during the year divided by the number of these hospitalizations.

Source: Michigan Resident Inpatient Files created by the Division for Vital Records and Health Statistics, Michigan Department of Health & Human Services, using data from the Michigan Inpatient Database obtained with permission from the Michigan Health & Hospital Association Service Corporation (MHASC).

Usage rights: Portions of this data are taken from a proprietary database owned and maintained by the MHASC. All rights reserved. This data may not be used for commercial purposes without first obtaining written permission from the MHASC. Contact MHASC at for more information.

Last Updated: 03/20/2022

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