FIG. 1.

Percentage of patients with housing issues in their EHR at Johns Hopkins Health System between 2016 and 2018; comparing structured* and unstructured data.

Notes:

* Patients with no entry in their address box, those with a positive response to the homelessness question in EHR questionnaires, and patients with an ICD-10 code of Z590 were counted as homeless in the structured data. Patients with ICD-10 codes of Z591 and/or Z598 were counted as patients with housing instability in the structured data.

Patients with at least 1 provider's note containing any of the developed phrases referring to housing issues in their unstructured EHR data were counted as those with housing issues.

EHR, electronic health record; ICD-10, International Classification of Diseases, Tenth Revision.