ICD Social Codes: An Underutilized Resource for Tracking Social Needs.

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DOI: 10.1097/MLR.0000000000000764


Background: Social determinants of health (SDH) data collected in health care settings could have important applications for clinical decision-making, population health strategies, and the design of performance-based incentives and penalties. One source for cataloging SDH data is the International Statistical Classification of Diseases and Related Health Problems (ICD).

Objective: To explore how SDH are captured with ICD Ninth revision SDH V codes in a national inpatient discharge database.

Materials and methods: Data come from the 2013 Healthcare Cost and Utilization Project (HCUP) National Inpatient Sample, a national stratified sample of discharges from 4363 hospitals from 44 US states. We estimate the rate of ICD-9 SDH V code utilization overall and by patient demographics and payer categories. We additionally estimate the rate of SDH V code utilization for: (a) the 5 most common reasons for hospitalization; and (b) the 5 conditions with the highest rates of SDH V code utilization.

Results: Fewer than 2% of overall discharges in the National Inpatient Sample were assigned an SDH V code. There were statistically significant differences in the rate of overall SDH V code utilization by age categories, race/ethnicity, sex, and payer (all P

Conclusions: SDH V codes are infrequently utilized in inpatient settings for discharges other than those related to mental health and alcohol/substance use. Utilization incentives will likely need to be developed to realize the potential benefits of cataloging SDH information.

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Medical care





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MeSH Keywords

Adolescent; Adult; Age Distribution; Aged; Child; Child, Preschool; Continental Population Groups; Female; Humans; Infant; Infant, Newborn; International Classification of Diseases; Male; Mental Health; Middle Aged; Needs Assessment; Patient Discharge; Sex Distribution; Social Determinants of Health; Socioeconomic Factors; Substance-Related Disorders; United States; Vulnerable Populations; Young Adult

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