Abstract P2: Medical Resource Utilization and Costs Following Hospitalization of Patients with Chronic Heart Failure in the United States

Background: The study objective was to determine medical resource utilization and direct and indirect costs following hospitalization with chronic heart failure (HF). Methods: Patients (Pts) with ≥1 hospitalization with a chronic HF claim (ICD-9 428.22, 428.32 or 428.42) were identified in a US commercial insurance claims database from 2004-2008. Pts were observed from beginning of first hospitalization (index hospitalization) for chronic HF until disenrollment or end of data availability. Inpatient, outpatient, and prescription drug data were used to estimate per patient per month (PPPM) utilization rates. Costs (2009 USD) were calculated per hospitalization and PPPM for patients ≤65 years, and included insurers’ reimbursement, patient out-of-pocket (OOP) and sick leave. Results: There were 7,814 pts (mean age 73.2 years, 55.7% (4,355/7,814) male) meeting inclusion criteria. Mean HF hospitalization length of stay increased from 6.7 days at index hospitalization to 8.2 days at fourth re-hospitalization. Rate of HF-related re-hospitalization remained over 0.045 PPPM throughout 24 months of follow-up, accounting for the majority of all-cause hospitalizations. Rate of all-cause and HF-related outpatient visits peaked at 4.0 and 0.59 visits PPPM, respectively, within the three months after index hospitalization. Index hospitalization was most expensive (Table). Patient OOP costs accounted for less than 10% of direct costs (Table) and sick leave costs were less than $1,800 at any hospitalization. During the study period, outpatient cardiovascular drugs accounted for a small proportion of total pharmacy costs; average PPPM cost varied from $88 to $124, less than 1% of the average cost of a HF-related hospitalization. Conclusions: Treating chronic HF pts is resource intensive. The greatest burden occurs within the three months after index hospitalization and pts continue to be burdened after hospitalization by high inpatient and outpatient visit rates. Index hospitalization HF-related re-hospitalization 1st 2nd 3rd 4th Total direct medical costs $31,998 $22,047 $23,946 $24,839 $24,517 Reimbursement by insurers $31,023 $21,521 $23,103 $23,781 $23,971 Patient out-of-pocket $975 $526 $843 $1,058 $546 Indirect costs (sick leave) $1,194 $1,194 $1,281 $1,703 $1,764 Total $33,192 $23,241 $25,227 $26,542 $26,281