Riley D Shearer1, Nathan D Shippee2, Tyler N A Winkelman3. 1. Department of Health Policy and Management, School of Public Health, University of Minnesota, 420 Delaware St. S.E., Minneapolis, MN 55455, United States of America. Electronic address: shear162@umn.edu. 2. Department of Health Policy and Management, School of Public Health, University of Minnesota, 420 Delaware St. S.E., Minneapolis, MN 55455, United States of America. Electronic address: nshippee@umn.edu. 3. Health, Homelessness, and Criminal Justice Lab, Hennepin Healthcare Research Institute, 701 Park Ave., Suite PP7.700, Minneapolis, MN 55415, United States of America; General Internal Medicine, Department of Medicine, Hennepin Healthcare, 715 South 8th Street, Minneapolis, MN 55404, United States of America. Electronic address: Tyler.Winkelman@hcmed.org.
Abstract
BACKGROUND AND AIMS: The recent surge in methamphetamine use highlights the need for timely data on its health effects and healthcare service use impact. However, there is no ICD code for methamphetamine use. This study quantifies the positive predictive value of ICD-9-CM and ICD-10-CM psychostimulant codes for methamphetamine use. METHODS: A retrospective chart review of 220 adults aged 18 and older who had an inpatient admission with a psychostimulant-associated billing diagnosis at an urban safety-net hospital. Diagnoses were categorized as either methamphetamine-related or involving another specific psychostimulant. The positive predictive value of both ICD-9-CM or ICD-10-CM psychostimulant diagnosis codes for methamphetamine use was calculated. RESULTS: ICD-9-CM and ICD-10-CM psychostimulant codes had high positive predictive values of 78.2% (95% CI 70.3%-86.0%) and 85.5% (95% CI 78.8%-92.1%), respectively, for methamphetamine use. The most common non-methamphetamine psychostimulant in our cohort was khat, a cathinone-containing plant native to East Africa, accounting for psychostimulant-related diagnosis in 16 of the 220 hospitalizations. CONCLUSIONS: The high predictive values of psychostimulant codes for methamphetamine use support the application of administrative data in measuring methamphetamine-related healthcare use, as well as co-morbid health conditions and treatment patterns.
BACKGROUND AND AIMS: The recent surge in methamphetamine use highlights the need for timely data on its health effects and healthcare service use impact. However, there is no ICD code for methamphetamine use. This study quantifies the positive predictive value of ICD-9-CM and ICD-10-CM psychostimulant codes for methamphetamine use. METHODS: A retrospective chart review of 220 adults aged 18 and older who had an inpatient admission with a psychostimulant-associated billing diagnosis at an urban safety-net hospital. Diagnoses were categorized as either methamphetamine-related or involving another specific psychostimulant. The positive predictive value of both ICD-9-CM or ICD-10-CM psychostimulant diagnosis codes for methamphetamine use was calculated. RESULTS: ICD-9-CM and ICD-10-CM psychostimulant codes had high positive predictive values of 78.2% (95% CI 70.3%-86.0%) and 85.5% (95% CI 78.8%-92.1%), respectively, for methamphetamine use. The most common non-methamphetamine psychostimulant in our cohort was khat, a cathinone-containing plant native to East Africa, accounting for psychostimulant-related diagnosis in 16 of the 220 hospitalizations. CONCLUSIONS: The high predictive values of psychostimulant codes for methamphetamine use support the application of administrative data in measuring methamphetamine-related healthcare use, as well as co-morbid health conditions and treatment patterns.
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