Related Experiment Videos
Accuracy of e-codes assigned to emergency department records
R J Schwartz1, B S Nightingale, D Boisoneau
1Department of Emergency Medicine/Trauma, Hartford Hospital, CT, USA.
Summary
The accuracy of external-cause-of-injury codes (e-codes) in emergency department (ED) records was moderate. Improving e-code standardization and automation is crucial for reliable injury surveillance and research.
Area of Science:
- Medical Informatics
- Public Health
- Injury Epidemiology
Background:
- Accurate external-cause-of-injury coding (e-codes) is vital for injury surveillance and research.
- Emergency departments (EDs) are key points for capturing injury data.
Purpose of the Study:
- To evaluate the accuracy of ICD-9-CM e-codes assigned to ED patient records.
- To identify types of errors in routine e-coding.
Main Methods:
- Compared routine e-coding by medical records coders (MRCs) with expert recoding of 108 ED patient charts.
- Used expert recoding as the criterion standard and measured accuracy with kappa statistic.
Main Results:
- Moderate agreement between MRCs and expert coding (kappa = 0.462).
- 55.6% exact match; 44.4% mismatches due to wrong category or incorrect specificity.
- Experts assigned more "place of occurrence" codes than MRCs.
Conclusions:
- E-code accuracy in ED records is moderate, with errors in specificity and categorization.
- Standardization and automation of e-coding are needed to improve data quality for injury surveillance.
- Inconsistent e-coding hinders national and international epidemiologic studies of injury causes.