An Open-Source Distributed Query Framework for Health Data

  • Empowers healthcare providers and researchers to perform queries across various EHR platforms while maintaining patient information behind provider firewalls
  • Supports population health reporting

Graphical Query Builder

hQuery Screenshot

hQuery offers a graphical drag-and-drop query builder to simplify query authoring.

What is hQuery?

hQuery is an open-source implementation of a framework for distributed query of health data. It uses a simplified standard information model, based on nationally recognized data elements, to enable generic queries against and summarized responses from various clinical data sources. hQuery provides distributed query capabilities that maintain patient information behind the provider (such as individual provider, hospital or HIE) firewall while supporting population reporting. hQuery integrates with certified EHR systems by leveraging their ability to generate HITSP C32 or ASTM CCR patient summaries.

Who are the intended users?

hQuery supports providers, researchers and public reporting agencies who need to perform custom queries over large patient populations but who lack the ability to import large patient data sets into their own IT infrastructure. EHR vendors and healthcare providers are free to download, use, and integrate the hQuery software in their systems.

What is the project's objective?

hQuery is designed to support large-scale summary reporting of health data that is distributed over a set of disparate sources. hQuery builds on scalable internet technologies and algorithms to allow use with arbitrarily large data sets using widely available standards-based code libraries.