August 19, 2026

Intellectual and Developmental Disabilities Data Report

This report describes the results of a data query of the patients with IDD conditions with at least 1 face-to-face encounter and a recorded diagnosis code (e.g., ICD-10) at a health care setting across PCORnet between January 1 – December 31, 2025. This query is the largest known, national-scale descriptive analysis of IDD populations using electronic health record (EHR) data. Query results inform how PCORnet can be used for patient-centered comparative effectiveness research (CER) research on IDD and to inform opportunities to enhance PCORnet IDD data resources.

Access the IDD Population Insights Report

ARCHIVE: October 2019-October 2022, with 10-year lookback IDD Data Report

Related material: Access the related PCORI IDD Workgroup report on ways to accelerate patient-centered comparative clinical effectiveness research (CER) focused on IDD.