ICD-9 tobacco use codes are effective identifiers of smoking status.

ICD-9 tobacco use codes are effective identifiers of smoking status. J Am Med Inform Assoc. 2013 Feb 9; Authors: Wiley LK, Shah A, Xu H, Bush WS Abstract OBJECTIVE: To evaluate the validity of, characterize the usage of, and propose potential research applications for International Classification of Diseases, Ninth Revision (ICD-9) tobacco codes in clinical populations. MATERIALS AND METHODS: Using data on cancer cases and cancer-free controls from Vanderbilt's biorepository, BioVU, we evaluated the utility of ICD-9 tobacco use codes to identify ever-smokers in general and high smoking prevalence (lung cancer) clinic populations. We assessed potential biases in documentation, and performed temporal analysis relating transitions between smoking codes to smoking cessation attempts. We also examined the suitability of these codes for use in genetic association analyses. RESULTS: ICD-9 tobacco use codes can identify smokers in a general clinic population (specificity of 1, sensitivity of  0.32), and there is little evidence of documentation bias. Frequency of code transitions between 'current' and 'former' tobacco use was significantly correlated with initial success at smoking cessation (p
Source: Journal of the American Medical Informatics Association - Category: Information Technology Authors: Tags: J Am Med Inform Assoc Source Type: research

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Source: American Journal of Clinical Oncology - Category: Cancer & Oncology Tags: Original Articles: Endocrine Source Type: research
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