Format

Send to

Choose Destination
Health Serv Res. 2012 Jun;47(3 Pt 1):984-1007. doi: 10.1111/j.1475-6773.2011.01340.x. Epub 2011 Oct 27.

The sensitivity of adverse event cost estimates to diagnostic coding error.

Author information

1
Department of Health Policy, Management and Evaluation, Faculty of Medicine, University of Toronto, 95 Bertmount Ave, Toronto, ON, M4M 2X8, Canada. gavin@preyrasolutions.com

Abstract

OBJECTIVE:

To examine the impact of diagnostic coding error on estimates of hospital costs attributable to adverse events.

DATA SOURCES:

Original and reabstracted medical records of 9,670 complex medical and surgical admissions at 11 hospital corporations in Ontario from 2002 to 2004. Patient specific costs, not including physician payments, were retrieved from the Ontario Case Costing Initiative database.

STUDY DESIGN:

Adverse events were identified among the original and reabstracted records using ICD10-CA (Canadian adaptation of ICD10) codes flagged as postadmission complications. Propensity score matching and multivariate regression analysis were used to estimate the cost of the adverse events and to determine the sensitivity of cost estimates to diagnostic coding error.

PRINCIPAL FINDINGS:

Estimates of the cost of the adverse events ranged from $16,008 (metabolic derangement) to $30,176 (upper gastrointestinal bleeding). Coding errors caused the total cost attributable to the adverse events to be underestimated by 16 percent. The impact of coding error on adverse event cost estimates was highly variable at the organizational level.

CONCLUSIONS:

Estimates of adverse event costs are highly sensitive to coding error. Adverse event costs may be significantly underestimated if the likelihood of error is ignored.

PMID:
22091908
PMCID:
PMC3423172
DOI:
10.1111/j.1475-6773.2011.01340.x
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Wiley Icon for PubMed Central
Loading ...
Support Center