Abstract 4143262: Unlocking Value: Revealing the Hidden Cost of Outpatient Interstage Care

Background: Interstage programs decrease morbidity and mortality and are potentially resource intensive. The accurate cost of these programs is unknown. Understanding cost and outcomes of care is necessary to provide high-value care for this population. Time-driven activity-based costing(TDABC) provides an accurate way to understanding costs that occur at the level of the patient. Research Question: What is the outpatient cost of the interstage period to the health care system? Methods: Single-center study of outpatient interstage care. Direct observation (over 9 months) and retrospective review were utilized to develop process maps. Outpatient interstage and pediatric visits were timed by 5 observers. Cost of personnel was calculated in dollars per minute utilizing median national health system salary data. Results: Patients attended a median of 13 cardiology, 5 pediatric, 3 physical therapy(PT), 4 occupational therapy(OT), and 7 speech therapy(SLP) visits while interstage. Total cost of interstage visit personnel was $258.18[$208.59-$389.24] and equipment cost was $1457.79. Total cost of a pediatric visit was $123.55[$130.80-$167.12]. Total cost of outpatient PT, OT, and SLP was $70.58, $66.68 and $72.43, respectively. Total cost of the outpatient interstage period was $6417.38[$5808.94-$8338.96] per patient.(Table) In interstage clinic, patients spent 132[89-165] minutes with providers and 64[41-66] minutes waiting.(Figure) In pediatric clinic, patients spent 73[71-76] minutes with providers and 9[6-13] minutes waiting. Conclusion: This work demonstrates that while challenging, TDABC analysis can be applied to complex interstage care to understand costs and move to deliver high-value care for this population. While caring for a child during the interstage period is time and resource intensive, it carries a relatively low cost to the health care system with a total cost of $6417.38 per patient. Additional work is needed to understand costs of inpatient interstage care.