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Introduction: The following is a study of the impact of comorbid conditions on hospital length of stay following spinal fusion. Methods: Surgeries were identified from the 2016 Healthcare Cost and Utilization Project National Inpatient Sample (HCUP-US-NIS) by Medicare Severity Diagnosis Related Group (MS-DRG) codes and subdivided for analysis by fusion location and procedure approach. Length of stay was evaluated in relation to comorbid disease status, fusion location, and surgical technique. Comorbidities of interest included hypothyroidism, diabetes mellitus, hypertension, hyperlipidemia, anxiety, obesity, chronic obstructive pulmonary disease, osteoarthritis, rheumatoid arthritis, major depression, coronary atherosclerosis, arrhythmia, congestive heart failure, osteoporosis, stroke, and transient ischemic attack. Patients hospitalized longer than two months were excluded from this analysis. Results: 185,216 patients undergoing an inpatient spinal fusion were identified (Cervical 32,753, Cervicothoracic 2,633, Thoracic 2,817, Thoracolumbar 4,761, Lumbar 32,316, Lumbosacral 17,326). Each comorbid disease was found to significantly increase the length of hospital stay for at least one procedure location (p |
