• Am J Manag Care · Feb 2020

    Medical utilization surrounding initial opioid-related diagnoses by coding method.

    • Amber Watson, David M Simon, Peratikos Meridith Blevins MB, and Elizabeth Ann Stringer.
    • MedLogix Communications, LLC, 2 Pierce Pl, Ste 1150, Itasca, IL 60143. Email: amberryanw@yahoo.com.
    • Am J Manag Care. 2020 Feb 1; 26 (2): e64-e68.

    ObjectivesTo identify methods for coding initial opioid-related disorder (ORD) diagnoses in administrative claims and determine whether coding methods correspond to acute medical utilization patterns.Study DesignRetrospective analysis of Blue Health Intelligence commercial data.MethodsWe included members with 2 years of continuous coverage around the first appearance of an ORD diagnosis code (initial ORD) in medical or pharmacy claims with dates of service between October 2015 and March 2016. Initial ORD was identified by International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) F11 codes or buprenorphine for medication-assisted treatment (BUP-MAT) with a duration of 3 or more days. Descriptive analyses were evaluated prediagnosis, in the month of diagnosis, and post diagnosis and included mean cost per member per month (PMPM); mean monthly percentage of members with at least 1 opioid agonist prescription (OAP), inpatient visit, or emergency department (ED) visit; and percentage of members with at least 1 ICD-10-CM Z79.891 code (long-term [current] use of opiate analgesic).ResultsA total of 6426 initial ORD diagnoses were identified by F11.20 (65.2%), F11.x (28.7%), and BUP-MAT (6.1%). PMPM costs for BUP-MAT ($2054) were lower than for F11.20 ($5053) and F11.x ($6597) in the diagnosis month. Mean monthly percentage of members with at least 1 OAP declined from pre- to post initial ORD diagnosis (F11.20, 52.5% to 50.0%; F11.x, 44.1% to 37.9%; BUP-MAT, 34.0% to 12.7%). Members with initial ORD coded as F11.x had the highest mean percentage with at least 1 inpatient or ED visit in the diagnosis month (30.9% and 26.8%, respectively) versus F11.20 (19.3% and 10.8%) and BUP-MAT (5.1% and 3.5%). Percentage of members with at least 1 Z79.891 code was higher post diagnosis than in the month of diagnosis (F11.20, 34.6% vs 25.7%; F11.x, 16.5% vs 8.1%; BUP-MAT, 19.5% vs 8.1%).ConclusionsMedical utilization patterns of members with ORD differ by the coding method used to document their initial diagnosis in administrative claims.

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