Carequality FAQ

How can I get started?

You can reach out to us at [email protected] or use this contact form. We recommend collecting/thinking about the following questions to help you get started:

  • What purpose of use applies to your software and your users?
  • How many facilities using your software will you connect to Carequality?
    • What is your intended roll-out for your facilities?
  • Will your outbound querying be automated off of workflow steps, rely on a user-facing interface, or both?
  • Will you be responding to queries directly or will Redox provide that service?

What is a Carequality Implementer? Who is my Carequality Implementer?

An organization that has signed the Carequality Connected Agreement and been accepted as such by Carequality. Implementers have developed the legacy exchange technologies, tested successfully against the Carequality community, and been approved as using those technologies successfully. This process of community testing usually takes between 3-6 months.

Implementers serve as on-ramps to the Carequality Framework. By working with Redox as your Implementer, you can start exchanging across the Carequality framework in a manner of days rather than months.

Can I still become a Carequality Implementer if I use Redox?

Yes. Some Redox customers would like to join the Carequality community to contribute to future national interoperability initiatives. These customers can utilize Redox’s platform and services to accelerate their certification and onboarding process while avoiding the need to build to legacy content and transport standards.

The workflows are pull/query. What if I want to push or be pushed data?

While pulling data is powerful for various use cases such as emergency care, it doesn’t solve all problems. Pushing data can be useful for workflows such as provider-to-provider messaging, event notification, diagnostic test ordering, and referrals. While Carequality and Commonwell currently don’t support push notifications, Redox has other options to help you accomplish your goals! We can help you push data through the DirectTrust network and other technical means.

Do I have to respond to other Carequality participants? Can I just pull data?

Carequality has two main requirements for participation:

  • Mutual Exchange – Carequality Connections must respond to all incoming queries with a purpose of use of Treatment
  • Open Exchange – Carequality Connections must respond in a non-discriminatory fashion with no terms, fees, or conditions

These two foundational principles are what makes Carequality so successful. They ensure that all of a patient’s clinical information is available nationwide for you to retrieve.

The only exceptions to the mutual exchange principle are:

  • Government agencies
  • On-paper organizations
  • Emergency Medical Services
  • Specialty Pharmacies
  • New organizations during the COVID pandemic
    • Temporary for the duration of the pandemic as decided by the Carequality steering committee

If you do not fall into these exceptions, responding to incoming queries with the unique clinical data you have as a result of your Treatment of the patient is required in order to make outbound Treatment queries. Any Implementer offering otherwise is putting you and your organization at risk of legal liability.

How can I re-use my Redox connection?

A single, easy-to-use Redox connection enables not only Carequality, but can be used for connecting to other health information exchanges, individual health systems, and other integration partners you may have. The same API queries used to search for patients and clinical documents can be used with workflows that leverage a direct connection to a healthcare organization’s EHR or to send data nationwide over the DirectTrust network.

Explore our network and the Carequality participants here!

What Redox event types do I use with Carequality?

For outbound queries, you’ll use the following Data Models:


  • Query


  • PatientQuery

For responding to inbound queries, you’ll use the following Data Models:


  • New
  • Update
  • Merge


  • VisitPush

What volumes will I see once connected to Carequality?

Many Carequality participants use automated workflow triggers to send outbound queries using algorithms based on radius-based searching around the patient’s address. While more rural areas may receive 10,000-25,000 daily, in geographic areas with high population density, such as the San Francisco Bay Area or New York metropolitan area, we have seen daily query volumes of up to 200,000 per location. Though Redox’s Gateway and Clinical Data Responder functionality, we help mitigate the risk this poses to your infrastructure and customers and reduce the overall development burden.

What about Commonwell and the eHealth Exchange?

Commonwell and eHealth Exchange are two of the nation’s largest centralized health information exchanges. Both are certified Carequality Implementers with thousands of sites live, meaning they can be queried seamlessly through the Carequality framework. Redox is also a member of the Commonwell network.

What are OIDs? Why are they important?

An OID is a globally unique ISO (International Organization for Standardization) identifier. They are important in the context of Carequality in that they uniquely identify organizations in the network. When creating your organization and facilities, you’ll need to use an OID as the primary identifier. You can read more about OIDs here.

What OID should I use when creating my organization?

Redox has a base OID and is a Registration Authority, so you will have an OID branch assigned for your use. This will typically be a branch off of the base OID 2.16.840.1.113883.3.6147.458.  

Alternatively, you can register and pay HL7 for an independent OID branch. Work with your Redox representative to determine the best strategy for your organizational identifiers.

What demographic information should I include in my queries?

At a minimum, you should include:

  • First name
  • Last Name
  • Date of Birth
  • Sex
  • Address

It is best practice to include as much information as possible. Most responding systems use advanced matching algorithms that have higher success rates as more information is included. Other valuable data points you may include:

  • Social Security Number
  • Phone numbers
  • Email

I’m getting a lot of documents back on the response. What can I do?

ClinicalSummary.DocumentQuery has a number of useful parameters you can use to limit the number of documents returned or to find the documents that are relevant for you. Not all parameters are supported by all vendors. When supported, using the Visit.StartDate parameter can help you pull documents after a given date of service.