Data Access Framework (DAF) Homepage

The DAF Initiative ended on March 22, 2017. We would like to thank the entire community for their participation over the years! Below you will find a detailed list of initiative artifacts and deliverables for your reference. 

DAF In Review

DAF Resources 

  • To access past meeting materials click here
  • To access DAF Standard Development Organization (SDO) ballot artifacts and publications click here

DAF Closing Ceremony

  • Final presentation can be accessed here
  • Final meeting recording can be accessed here

DAF Initiative Artifacts and Deliverables


DAF General Reference Materials

DAF Initiative Kickoff

This is the slide presentation from the DAF/ONC initiative kickoff from July 16, 2013.

DAF Phase 1 (Local) and Phase 2 (Targeted) Project Charter

The document describes the overall DAF project charter, including the challenge statement, scope, deliverables and timelines.

DAF Terminology

This wikipage describes the terminology that will be used by the community to discuss DAF standards.

Data Elements Standards Analysis

DAF Candidate Standards 

These draft documents outline the various standards examined by the DAF community.

FHIR Overview

This presentation provides a high-level overview of API's, the HL7 FHIR Standard (including FHIR Resources, FHIR implementation guides and profiles), along with values sets, security components, and more. (9/17/2015)

DAF Closing Ceremony Presentation

Meeting Recording

Overview of the accomplishments and dedication of the DAF community

  • Opening remarks from ONC and special guests
  • Review the DAF initiative and its accomplishments
  • Feedback back from pilots and other community participants
  • Findings and next steps
Executive Summary

The Executive Summary is a high-level overview of the DAF initiative, covering all aspects from inception, to execution and piloting.
DAF Project Summary

The DAF Project Summary is a detailed review of the DAF initiative, covering all aspects from inception, to execution and piloting. Additional materials and links regarding all aspects of the project can be found within the document, or the supplemental appendices at the end of the document.

DAF Use Case Documents

Local DAF Use Case Launch

Targeted DAF Use Case Launch 
These are the launch presentations of the Local and Targeted Data Access Use Case.

DAF Local Access Use Case 1(Phase 1)

This document outlines the scope of the Local Data Access Use Case and defines the requirements for intra-organizational data access (published 12/11/2013).

DAF Targeted Access Use Case 2 (Phase 2)

This document outlines the scope of the Targeted Data Access Use Case and defines the requirements for inter-organizational data access (published 2/5/2014).

DAF Phase 3 Reference Materials

DAF Phase 3 Technical Overview

An overview of the PCORnet Abstract Model as well as the Proposed Technical abilities.

DAF Phase 3 (DAF for Research) CharterThe charter describes the challenge statement, scope, capabilities and of data access for Research.
DAF for Research Kickoff PresentationThis is the slide presentation from the DAF for Research–Phase 3 kickoff from September 9, 2015.

Phase 3 Pilot Requirements

Information on the minimum technical requirements an organization must meet for Phase 3 piloting.

DAF Phase 3 FAQs

These draft slides address the frequently asked questions for data access for research.

Functional Requirements (4/6/16)

Functional Requirements identify the capabilities a system in a role must have in order to enable interoperable exchange of the healthcare data of interest. They provide a detailed breakdown of the requirements in terms of the intended functional behaviors of the application. 
Tabs (C1-C6) contain information about the Functional Requirements needed for each capability. 

PCORnet Common Data Model (CDM) Specification, Version 3.0 and PCORnet Common Data Model v3.0 – parseable

The Common Data Model (CDM) is a way of organizing data into a standard structure. The approach PCORnet is using to do this mirrors the approaches used by other large national research consortia, including the HMO Research Network and the Mini-Sentinel Network. To learn more click here.

DAF Phase 3 Pilot Deliverables

Lincoln Peak Partners (LPP)

Patient-centered SCAlable National Network for Effectiveness Research (pSCANNER)

Research Action for Health Network (REACHnet)


DAF Initiative Publications


On September 23, 2015, Health Level Seven® International (HL7®) published Release 2 of the HL7 Fast Healthcare Interoperability Resources (FHIR®) Draft Standard for Trial Use (DSTU). Additionally, the DAF FHIR Implementation Guide, a US-realm specific implementation guide, was also published. The DAF FHIR IG identifies and recommends standards for the interoperable representation and transmission of data using the notion of a Query Stack, which modularizes the various layers of the Data Access Framework.

HL7 FHIR® US Core IG Release 1

On March 22, 2017 HL7® officially released and published FHIR Release 3 (STU). US Core FHIR Implementation Guide (Release 1) officially released its version, based on FHIR Version 3.0.0.

The US Core Implementation Guide defines the minimum conformance requirements for accessing patient data as defined by the Argonaut pilot implementations and the ONC 2015 Edition Common Clinical Data Set (CCDS). These profiles are intended to be the foundation for future US Realm FHIR implementation guides. In addition to Argonaut, they are used by DAF-ResearchQI-Core, and CIMI. Under the guidance of HL7 and the HL7 US Realm Steering Committee, the content will expand in future versions to meet the needs specific to the US Realm.

HL7 FHIR® DAF for Research IG Release 2

On April 21, 2017 HL7® officially released and published the DAF Research Implementation Guide STU2. The DAF-Research IG focuses on enabling researchers to access data from multiple organizations in the context of Learning Health System (LHS). While DAF-Research IG can be applied to multiple use cases, the current requirements have been drawn heavily from PCORnet use cases and implementations and are described on the DAF website. The capabilities described as part of the IG are intended to be leveraged to build our nation’s data infrastructure for a Learning Health System. DAF-Research will leverage the US-Core IG and profiles for the resources that overlap with US-Core. In addition DAF-Research will create additional profiles necessary for DAF-Research purposes which do not exist in US-Core.

DAF Document Metadata Based Access Implementation Guide

On September 24, 2015, the Integrating the Healthcare Enterprise (IHE) Patient Care Coordination (PCC) Technical Committee published The Data Access Framework (DAF) Document Metadata Based Access Implementation Guide. This US National Extension provides requirements and guidance on accessing clinical documents created during clinical workflows. The guide accomplishes this using RESTful resources based on HL7 FHIR® and the more traditional SOAP based IHE Profiles.

DAF/IHE White Paper

On October 24, 2014, the IHE Patient Care Coordination (PCC) domain has published the DAF White Paper, A Data Access Framework Using IHE Profiles as a resource artifact under the IHE technical framework resources.

HL7 FHIR Connectathon Results

FHIR Connectathon 14 


The US Core IG participated in FHIR Connectathon 14 as an official track proposal from  January 14-15, 2017 in San Antonio, TX. Testers included:

Servers-, Inc., Cerner, T-System, Inc., Transcend Insights, GE Healthcare Digital. Clients-, Inc. Details on the US Core test track can be found here:

FHIR Connectathon 13

The US Core IG participated in FHIR Connectathon  13 in September 2016 in Baltimore, MD. Testers included:

Servers:, Inc., Allscripts, Cerner, Epic, Intersystems, T-System, Inc., Mayo Clinic. Clients:, Inc. Cigna, CIOX Health, InterSystems, Medidata Solutions, Philips, Qvera, XMLModeling, VA. Testing Tools: Crucible, Touchstone

Details on the US Core test track can be found here:


FHIR Connectathon 12

The DAF Core IG (later renamed to US Core IG) participated in FHIR Connectathon  12 from May 7-8, 2016 in Montreal, Canada. Details on the test track can be found here.

FHIR Connectathon 11

The DAF Core IG (later renamed to US Core IG) participated in FHIR Connectathon 11 from January 9-10, 2016 in Orlando, FL. The following vendors formally signed-up to test DAF (additional onsite participants were expected): Cerner, Qvera, Care Evolution,, Inc., InterSystems, McKesson and Transcend Insights.

IHE N.A. Connectathon
IHE N.A. Connectathon 2015The DAF team participated in the IHE N.A. Connectathon from January 25-30, 2015 in Cleveland, Ohio where DAF tested as a defined implementation of the IHE MHD profile.


Initiative Contacts 

ONC LeadFarrah
Initiative CoordinatorJohnathan
Project ManagementJamie
Project Management SupportGayathri
Project SupportNik
Project SupportSwapna
Technical Support SMEDragon (Nagesh)
Standards SMEBrett
Standards SMEEd
Privacy and Security SMEGlen
Standards SupportAngelique
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