Severity of illness
Encyclopedia
Severity of illness is defined as the extent of organ system derangement or physiologic decompensation for a patient. It gives a medical classification
into minor, moderate, major, and extreme. The SOI class is meant to provide a basis for evaluating hospital
resource use or to establish patient care guidelines.
Patients are assigned their SOI based on their specific diagnoses and procedures performed during their medical encounter, which is generally an inpatient hospital stay. Patients with higher SOI (e.g. major or extreme) are more likely to consume greater healthcare resources and stay longer in hospitals than patients with lower SOI in the same DRG.
The Centers for Medicare and Medicaid Services
, also known as CMS, considered the 3M APR-DRG and SOI system as a potential evolution to the DRG system in 2006, but received such negative feedback from the industry that in March 2007 decided to adopt another internally developed system evolved from the [Diagnosis-related group] DRG http://www.rand.org/pubs/working_papers/2007/RAND_WR434.1.pdf. SOI is still commonly used throughout the United States to adjust for patient complexity, so that physicians and other groups can compare resource utilization, complication rates, and length of stay.
Medical classification
Medical classification, or medical coding, is the process of transforming descriptions of medical diagnoses and procedures into universal medical code numbers...
into minor, moderate, major, and extreme. The SOI class is meant to provide a basis for evaluating hospital
Hospital
A hospital is a health care institution providing patient treatment by specialized staff and equipment. Hospitals often, but not always, provide for inpatient care or longer-term patient stays....
resource use or to establish patient care guidelines.
Patients are assigned their SOI based on their specific diagnoses and procedures performed during their medical encounter, which is generally an inpatient hospital stay. Patients with higher SOI (e.g. major or extreme) are more likely to consume greater healthcare resources and stay longer in hospitals than patients with lower SOI in the same DRG.
The Centers for Medicare and Medicaid Services
Centers for Medicare and Medicaid Services
The Centers for Medicare & Medicaid Services , previously known as the Health Care Financing Administration , is a federal agency within the United States Department of Health and Human Services that administers the Medicare program and works in partnership with state governments to administer...
, also known as CMS, considered the 3M APR-DRG and SOI system as a potential evolution to the DRG system in 2006, but received such negative feedback from the industry that in March 2007 decided to adopt another internally developed system evolved from the [Diagnosis-related group] DRG http://www.rand.org/pubs/working_papers/2007/RAND_WR434.1.pdf. SOI is still commonly used throughout the United States to adjust for patient complexity, so that physicians and other groups can compare resource utilization, complication rates, and length of stay.
See also
- Diagnosis-related groupDiagnosis-related groupDiagnosis-related group is a system to classify hospital cases into one of originally 467 groups. The 467th was "Ungroupable." The system of classification was developed as a collaborative project by Robert B Fetter, PhD of the Yale School of Management, and John D Thompson, MPH of the Yale...
(DRG) - Risk of mortalityRisk of mortalityThe risk of mortality provides a medical classification to estimate the likelihood of inhospital death for a patient. The ROM classes are minor, moderate, major, and extreme. The ROM class is used for the evaluation of patient mortality.-References:...
(ROM) - Case mix indexCase Mix IndexCase mix index is the average diagnosis-related group weight for all of a hospital's Medicare volume. It can be used to adjust the average cost per patient for a given hospital relative to the adjusted average cost for other hospitals by dividing the average cost per patient by the hospital's...
(CMI) - Diagnosis codesDiagnosis codesIn healthcare, diagnostic codes are used to group and identify diseases, disorders, symptoms, human response patterns, and medical signs, and are used to measure morbidity and mortality...