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Do we have enough information? How ICD-10-AM Activity codes measure up.
Irene Hoy-Yen Soo1, Mary K Lam, Julie Rust
1Discipline of Health Informatics, Faculty of Health Sciences, The University of Sydney, Lidcombe NSW, Australia.
Summary
The International Statistical Classification of Diseases and Related Health Problems, Tenth revision, Australian Modification (ICD-10-AM) Third Edition
Area of Science:
- Health Informatics
- Injury Surveillance
- Public Health Data Quality
Background:
- The International Statistical Classification of Diseases and Related Health Problems, Tenth revision, Australian Modification (ICD-10-AM) Third Edition introduced expanded activity codes.
- Previous editions had limited codes for injury circumstances.
- Accurate injury coding is crucial for research and policy.
Purpose of the Study:
- To evaluate the utilization of new activity codes in ICD-10-AM Third Edition.
- To assess the data quality, specifically completeness and specificity, of activity coding.
- To identify areas for improving injury coding practices.
Main Methods:
- Descriptive analysis of injury separations from 2001/02 to 2005/06.
- Comparison of activity code usage between ICD-10-AM Second and Third Editions.
- Examination of external cause coding completeness and activity code specificity in the 2005/06 dataset.
Main Results:
- The expanded activity codes were widely adopted, with only 46 seldom used.
- New activity codes constituted 10% of annual assignments.
- Data showed high completeness (>97%), with missing activity codes being the primary gap.
- Significant reliance on non-specific codes was observed in 14 of 24 categories.
- Specific categories like 'Team ball sports' lacked detailed coding.
Conclusions:
- The enhanced activity codes in ICD-10-AM Third Edition are valuable and extensively used.
- High completeness is achieved, but specificity remains a challenge, particularly in certain sports categories.
- Improved clinical documentation and coder training are essential for enhancing the specificity of injury event coding.
- Addressing non-specific coding is vital for maximizing the utility of injury data for prevention and control efforts.
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