Hospital readmission with Clostridium difficile infection as a secondary diagnosis is associated with worsened outcomes and greater revenue loss relative to principal diagnosis: A retrospective cohort study

Medicine (Baltimore). 2018 Sep;97(36):e12212. doi: 10.1097/MD.0000000000012212.

Abstract

Recurrent Clostridium difficile infection (rCDI) requiring rehospitalization contributes to poor outcomes, which may differ between patients hospitalized with versus for it.We performed a multicenter retrospective cohort study of rehospitalized adults surviving initial CDI hospitalization. Hospital mortality, length of stay (LOS), 30-day readmission, and mean gap between hospital costs and Diagnosis Related Group (DRG) reimbursement served as outcomes.Among the 25.7% (n = 99,175) survivors requiring rehospitalization, 36,504 (36.8%) had rCDI (14,005 [38.4%] principal diagnosis rCDI [PrCDI]). Compared with non-CDI, PrCDI, and secondary diagnosis rCDI [SrCDI] carried lower risk of death (PrCDI odds ratio [OR] 0.52; 95% confidence interval [CI] 0.46, 0.58; SrCDI OR 0.80; 95% CI 0.75, 0.85) and 30-day readmission (PrCDI OR 0.84; 95% CI 0.80, 0.88; SrCDI OR 0.97; 95% CI 0.94, 1.01), and excess LOS (PrCDI 1.8 days; 95% CI 1.7, 2.0; SrCDI 1.4 days; 95% CI 1.3, 1.5), and costs (PrCDI $1399; 95% CI $858, $1939; SrCDI $2809; 95% CI $2307, $3311). Mean gap between hospital costs and DRG reimbursements was highest in SrCDI ($13,803).A rehospitalization within 60-days of an initial CDI hospitalization occurs in approximately 25% of all survivors, 1/3 with rCDI. SrCDI carries worse outcomes than PrCDI. The potential loss of revenue incurred by the hospital is nearly 3-fold higher for SrCDI than PrCDI.

Publication types

  • Comparative Study
  • Multicenter Study
  • Observational Study

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Clostridium Infections / diagnosis*
  • Clostridium Infections / economics
  • Clostridium Infections / mortality
  • Clostridium Infections / therapy*
  • Female
  • Follow-Up Studies
  • Health Care Costs
  • Hospital Mortality
  • Humans
  • Length of Stay / economics
  • Male
  • Middle Aged
  • Patient Readmission* / economics
  • Retrospective Studies
  • United States
  • Young Adult