Level of agreement between medical record and ICD-10-AM coding of mental health, alcohol and drug conditions in trauma patients

Tu Q Nguyen, Pamela M Simpson, Sandra C Braaf, Peter A Cameron, Rodney Judson, Belinda J Gabbe

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Background: Despite the reliance on administrative data in epidemiological studies, there is little information on the completeness of co-morbidities in administrative data coded from medical records. Objective: The aim of this study was to quantify the agreement between the International Classification of Diseases, Tenth Revision, Australian Modification (ICD-10-AM) administrative coding of mental health, drug and alcohol co-morbidities and medical records in a severely injured patient population. Method: A random sample of patients (n = 500) captured by the Victorian State Trauma Registry and definitively managed at the state’s adult major trauma services was selected for the study. Retrospective medical record review was conducted to collect data about documented co-morbidities. The agreement between ICD-10-AM data generated from routine hospital coding and medical record–based co-morbidities was determined using Cohen’s κ and prevalence-adjusted bias-adjusted kappa (PABAK) statistics. Results: The percentage of agreement between the medical record and ICD-10-AM coding for mental health, drug and alcohol co-morbidities was 72.8%, and the PABAK showed moderate agreement (PABAK = 0.46; 95% confidence interval (CI): 0.37, 0.54). There was no difference in agreement between unintentional injury patients (PABAK = 0.52; 95% CI: 0.42, 0.62) compared with intentional injury patients (PABAK = 0.36, 95% CI: 0.23, 0.49), and no change in agreement for patients admitted before (PABAK = 0.40; 95% CI: 0.30, 0.50) and after the introduction of mandatory co-morbidity coding (PABAK = 0.46; 95% CI: 0.37, 0.54). Conclusion: Despite documentation in the medical record, a large proportion of mental health, drug and alcohol conditions were not coded in ICD-10-AM. Acknowledgement of these limitations is needed when using ICD-10-AM coded co-morbidities in research studies and health policy development. Implications: This work has implications for researchers of drug and alcohol abuse; mental health; accidents and injuries; workers' compensation; health workforce; health services; and policy decisions for healthcare, emergency services, insurance industry, national productivity and welfare costings reliant on those research outcomes.

Original languageEnglish
Number of pages8
JournalHealth Information Management Journal
DOIs
Publication statusAccepted/In press - 19 Apr 2018

Keywords

  • clinical coding
  • medical record
  • ICD-10-AM
  • data quality
  • documentation
  • activity-based funding

Cite this

@article{daf676dd66c64f3b8356a0809f3e274a,
title = "Level of agreement between medical record and ICD-10-AM coding of mental health, alcohol and drug conditions in trauma patients",
abstract = "Background: Despite the reliance on administrative data in epidemiological studies, there is little information on the completeness of co-morbidities in administrative data coded from medical records. Objective: The aim of this study was to quantify the agreement between the International Classification of Diseases, Tenth Revision, Australian Modification (ICD-10-AM) administrative coding of mental health, drug and alcohol co-morbidities and medical records in a severely injured patient population. Method: A random sample of patients (n = 500) captured by the Victorian State Trauma Registry and definitively managed at the state’s adult major trauma services was selected for the study. Retrospective medical record review was conducted to collect data about documented co-morbidities. The agreement between ICD-10-AM data generated from routine hospital coding and medical record–based co-morbidities was determined using Cohen’s κ and prevalence-adjusted bias-adjusted kappa (PABAK) statistics. Results: The percentage of agreement between the medical record and ICD-10-AM coding for mental health, drug and alcohol co-morbidities was 72.8{\%}, and the PABAK showed moderate agreement (PABAK = 0.46; 95{\%} confidence interval (CI): 0.37, 0.54). There was no difference in agreement between unintentional injury patients (PABAK = 0.52; 95{\%} CI: 0.42, 0.62) compared with intentional injury patients (PABAK = 0.36, 95{\%} CI: 0.23, 0.49), and no change in agreement for patients admitted before (PABAK = 0.40; 95{\%} CI: 0.30, 0.50) and after the introduction of mandatory co-morbidity coding (PABAK = 0.46; 95{\%} CI: 0.37, 0.54). Conclusion: Despite documentation in the medical record, a large proportion of mental health, drug and alcohol conditions were not coded in ICD-10-AM. Acknowledgement of these limitations is needed when using ICD-10-AM coded co-morbidities in research studies and health policy development. Implications: This work has implications for researchers of drug and alcohol abuse; mental health; accidents and injuries; workers' compensation; health workforce; health services; and policy decisions for healthcare, emergency services, insurance industry, national productivity and welfare costings reliant on those research outcomes.",
keywords = "clinical coding, medical record, ICD-10-AM, data quality, documentation, activity-based funding",
author = "Nguyen, {Tu Q} and Simpson, {Pamela M} and Braaf, {Sandra C} and Cameron, {Peter A} and Rodney Judson and Gabbe, {Belinda J}",
year = "2018",
month = "4",
day = "19",
doi = "10.1177/1833358318769482",
language = "English",
journal = "Health Information Management Journal",
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Level of agreement between medical record and ICD-10-AM coding of mental health, alcohol and drug conditions in trauma patients. / Nguyen, Tu Q; Simpson, Pamela M; Braaf, Sandra C; Cameron, Peter A; Judson, Rodney; Gabbe, Belinda J.

In: Health Information Management Journal, 19.04.2018.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Level of agreement between medical record and ICD-10-AM coding of mental health, alcohol and drug conditions in trauma patients

AU - Nguyen, Tu Q

AU - Simpson, Pamela M

AU - Braaf, Sandra C

AU - Cameron, Peter A

AU - Judson, Rodney

AU - Gabbe, Belinda J

PY - 2018/4/19

Y1 - 2018/4/19

N2 - Background: Despite the reliance on administrative data in epidemiological studies, there is little information on the completeness of co-morbidities in administrative data coded from medical records. Objective: The aim of this study was to quantify the agreement between the International Classification of Diseases, Tenth Revision, Australian Modification (ICD-10-AM) administrative coding of mental health, drug and alcohol co-morbidities and medical records in a severely injured patient population. Method: A random sample of patients (n = 500) captured by the Victorian State Trauma Registry and definitively managed at the state’s adult major trauma services was selected for the study. Retrospective medical record review was conducted to collect data about documented co-morbidities. The agreement between ICD-10-AM data generated from routine hospital coding and medical record–based co-morbidities was determined using Cohen’s κ and prevalence-adjusted bias-adjusted kappa (PABAK) statistics. Results: The percentage of agreement between the medical record and ICD-10-AM coding for mental health, drug and alcohol co-morbidities was 72.8%, and the PABAK showed moderate agreement (PABAK = 0.46; 95% confidence interval (CI): 0.37, 0.54). There was no difference in agreement between unintentional injury patients (PABAK = 0.52; 95% CI: 0.42, 0.62) compared with intentional injury patients (PABAK = 0.36, 95% CI: 0.23, 0.49), and no change in agreement for patients admitted before (PABAK = 0.40; 95% CI: 0.30, 0.50) and after the introduction of mandatory co-morbidity coding (PABAK = 0.46; 95% CI: 0.37, 0.54). Conclusion: Despite documentation in the medical record, a large proportion of mental health, drug and alcohol conditions were not coded in ICD-10-AM. Acknowledgement of these limitations is needed when using ICD-10-AM coded co-morbidities in research studies and health policy development. Implications: This work has implications for researchers of drug and alcohol abuse; mental health; accidents and injuries; workers' compensation; health workforce; health services; and policy decisions for healthcare, emergency services, insurance industry, national productivity and welfare costings reliant on those research outcomes.

AB - Background: Despite the reliance on administrative data in epidemiological studies, there is little information on the completeness of co-morbidities in administrative data coded from medical records. Objective: The aim of this study was to quantify the agreement between the International Classification of Diseases, Tenth Revision, Australian Modification (ICD-10-AM) administrative coding of mental health, drug and alcohol co-morbidities and medical records in a severely injured patient population. Method: A random sample of patients (n = 500) captured by the Victorian State Trauma Registry and definitively managed at the state’s adult major trauma services was selected for the study. Retrospective medical record review was conducted to collect data about documented co-morbidities. The agreement between ICD-10-AM data generated from routine hospital coding and medical record–based co-morbidities was determined using Cohen’s κ and prevalence-adjusted bias-adjusted kappa (PABAK) statistics. Results: The percentage of agreement between the medical record and ICD-10-AM coding for mental health, drug and alcohol co-morbidities was 72.8%, and the PABAK showed moderate agreement (PABAK = 0.46; 95% confidence interval (CI): 0.37, 0.54). There was no difference in agreement between unintentional injury patients (PABAK = 0.52; 95% CI: 0.42, 0.62) compared with intentional injury patients (PABAK = 0.36, 95% CI: 0.23, 0.49), and no change in agreement for patients admitted before (PABAK = 0.40; 95% CI: 0.30, 0.50) and after the introduction of mandatory co-morbidity coding (PABAK = 0.46; 95% CI: 0.37, 0.54). Conclusion: Despite documentation in the medical record, a large proportion of mental health, drug and alcohol conditions were not coded in ICD-10-AM. Acknowledgement of these limitations is needed when using ICD-10-AM coded co-morbidities in research studies and health policy development. Implications: This work has implications for researchers of drug and alcohol abuse; mental health; accidents and injuries; workers' compensation; health workforce; health services; and policy decisions for healthcare, emergency services, insurance industry, national productivity and welfare costings reliant on those research outcomes.

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KW - medical record

KW - ICD-10-AM

KW - data quality

KW - documentation

KW - activity-based funding

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SN - 1833-3583

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