• Am J Prev Med · Dec 2022

    Social Needs Identified by Diagnostic Codes in Privately Insured U.S. Adults.

    • David T Liss, Manisha Cherupally, Raymond H Kang, Cassandra Aikman, Andrew J Cooper, and Matthew J O'Brien.
    • Division of General Internal Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois; Institute of Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois. Electronic address: david.liss@northwestern.edu.
    • Am J Prev Med. 2022 Dec 1; 63 (6): 100710161007-1016.

    IntroductionThe relationships between healthcare use and social needs are not fully understood. In 2015, International Classification of Diseases, Tenth Revision coding introduced voluntary Z codes for social needs‒related healthcare encounters. This study evaluated early national patterns of Z codes in privately insured adults.MethodsIn 2021, the authors conducted a case-control analysis of national commercial health payer claims from 2016 to 2019. Among adults with ≥6 months of continuous enrollment and ≥1 medical claims, patients with any assigned Z codes were defined as cases. Controls were selected through stratified random sampling. Z codes were organized under 3 categories: socioeconomic, community/social, and environmental.ResultsOf 29.5 million adults, 521,334 patients (1.8%) had any assigned Z codes. Among all the Z codes, 53.5% identified community/social issues, 30.3% identified environmental issues, and 16.2% identified socioeconomic issues. Among socioeconomic Z codes, housing needs were frequently identified, but needs for food, utility bills, and transportation were very rarely identified. In multivariable regression analysis, females had higher odds of Z code assignment than males. Depression and chronic pulmonary disease were the 2 common comorbidities (≥5% prevalence in cases and controls) that were highly associated with Z code assignment. Less common comorbidities strongly associated with Z code assignment were drug abuse, alcohol abuse, psychoses, and AIDS/HIV.ConclusionsIn this national study of privately insured patients, many Z codes identified healthcare encounters caused by social stressors, whereas few identified food- or transportation-related causes. Depression and chronic pulmonary disease were highly associated with Z code assignment.Copyright © 2022 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

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