Related Experiment Video
Updated: Jul 7, 2026
Colorectal Cancer Cell Surface Protein Profiling Using an Antibody Microarray and Fluorescence Multiplexing
Published on: September 25, 2011
Investigation of leukaemia and lymphoma AR-DRGs at a Sydney teaching hospital
Beth A Reid1, Corinne Allan, Jean H McIntosh
1Faculty of Health Sciences, The University of Sydney, PO Box 170, Lidcombe, NSW 1825, Australia. b.reid@fhs.usyd.edu.au
Insights
This study examined acute leukaemia, non-acute leukaemia, and lymphoma coding errors in Australian Refined Diagnosis Related Groups (AR-DRGs). Findings indicate miscoding contributed to a 15% error rate, but a true decrease in high-complexity cases also occurred.
Area of Science:
- Health Informatics
- Medical Coding Accuracy
- Hospital Administration
Background:
- Australian Refined Diagnosis Related Groups (AR-DRGs) are crucial for hospital funding.
- Previous fiscal year data showed a decrease in high-complexity AR-DRGs for specific haematological malignancies.
- The Sydney teaching hospital investigated potential causes for this observed decrease.
Purpose of the Study:
- To determine if the reduced assignment of acute leukaemia, non-acute leukaemia, and lymphoma episodes to highest complexity AR-DRGs (R60 A, B, C and R61 A, B) was due to miscoding or a genuine decline in cases.
- To assess the impact of coding errors on hospital revenue.
Main Methods:
- Non-blinded review of 242 patient episodes coded under AR-DRGs R60 A, B, C and R61 A, B during fiscal year 2000-2001.
- Analysis focused on identifying miscoding of complications and comorbidities.
- Comparison with data from the previous fiscal year (1999-2000).
Main Results:
- A 15% Diagnosis Related Group (DRG) error rate was identified, primarily due to under-coding of complications and comorbidities.
- Despite coding errors, a genuine decrease in the number of highest complexity episodes was confirmed.
- The identified DRG assignment errors may have resulted in financial disadvantage for the hospital.
Conclusions:
- While miscoding (under-coding) was present and contributed to a 15% DRG error rate, it did not fully explain the decrease in high-complexity AR-DRG assignments.
- A true reduction in the incidence of highest complexity leukaemia and lymphoma episodes occurred.
- Hospitals must ensure accurate coding to avoid potential financial repercussions and ensure appropriate resource allocation.
Abstract:
Using non-blinded methodology, this study checked the coding of acute leukaemia, non-acute leukaemia and lymphoma episodes assigned to the AR-DRGs R60 A, B, C and R61 A, B during the fiscal year 2000-2001 at a Sydney teaching hospital. The purpose was to investigate whether the assignment of fewer episodes of these diseases to the highest complexity AR-DRGs during that year compared to 1999-2000 was due to miscoding, or due to a true decrease in episodes. A check of all 242 episodes revealed a degree of miscoding (mainly under-coding) of complications and comorbidities that had caused a 15% DRG error rate; nevertheless, there was a true decrease in the highest complexity episodes. The error in DRG assignment may have caused some financial disadvantage to the hospital.
