Eczema cases were identified in EHR data using ICD-9-CM 691, 691.8 and 705.8; ICD-10-CM L20, L20.8, L20.9, L30 and L30.1; and SNOMED codes 24079001 and 43116000. We calculated the prevalence of eczema and 95% confidence intervals (CI) among participants across age and self-identified ...