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Navigating EHR Interoperability: A Guide for Building Health Tech

November 12, 2024

In the intricate web of healthcare regulations, interoperability in health tech stands as a linchpin for seamless data exchange and coordinated patient care. At the heart of this ecosystem lies the Electronic Health Record (EHR) or Electronic Medical Records (EMR), a cornerstone of modern healthcare delivery. 

Understanding the nuances of EHR/EMR interoperability is essential for both developers and clinical leaders venturing into the realm of health tech innovation.

A Brief History of EHR Interoperability

The journey of EHR interoperability traces back to the early days of electronic health records when healthcare providers began digitizing patient data for improved accessibility and efficiency. 

However, the proliferation of proprietary EHR systems in the 20th century created data silos, hindering seamless data exchange between different healthcare providers and systems. 

Recognizing the need for common standards, organizations such as HL7 (health level 7) spearheaded efforts to develop interoperability frameworks, laying the groundwork for modern interoperability initiatives. 

The introduction of HL7's FHIR standard in 2014 marked a significant milestone in the evolution of EHR interoperability, offering a flexible and modular approach to healthcare data exchange. 

Since then, collaborative efforts from industry stakeholders, regulatory bodies, and technology vendors have propelled interoperability forward, driving innovation and paving the way for a more interconnected healthcare ecosystem.

What is EHR Interoperability?

EHR interoperability refers to the ability of different EHR systems to communicate, exchange data, and utilize patient health information effectively. At its core, interoperability enables healthcare providers to access comprehensive patient records across disparate systems, facilitating informed decision-making and continuity of care.

When it comes to developing health tech for your EHR, navigating interoperability requires a nuanced understanding of the diverse landscape of EHR systems. EHRs come in various forms, ranging from comprehensive enterprise solutions to specialized platforms tailored for specific healthcare specialties or settings. Developers must consider factors such as data standards, interoperability protocols, and integration capabilities when designing and implementing EHR solutions.

Unpacking the Challenges

Achieving seamless interoperability is not without its challenges. Legacy electronic medical record systems, proprietary data formats, and varying degrees of standardization pose hurdles to effective data exchange. Additionally, regulatory requirements, such as HIPAA (Health Insurance Portability and Accountability Act) compliance, add layers of complexity to interoperability efforts, requiring meticulous attention to privacy and security considerations.

Healthcare Regulations to know for Interoperability Standards

 1. The 21st Century Cures Act

Enacted in 2016, the 21st Century Cures Act introduced provisions aimed at promoting interoperability, prohibiting information blocking, and allowing patient access to health information. Key components of the act include:

Information Blocking Prohibition: Healthcare providers, health IT developers, and health information exchanges (HIEs) are prohibited from engaging in practices that block or interfere with the access, exchange, or use of electronic health information.

API Requirement: The Act mandates that certified health IT systems must support standardized APIs (Application Programming Interfaces) for patient access to electronic health information, enabling individuals to access their health data through third-party applications.

2. CMS Interoperability and Patient Access Final Rule

The Centers for Medicare & Medicaid Services (CMS) issued the Interoperability and Patient Access Final Rule in 2020, building upon the provisions of the 21st Century Cures Act. Key requirements of the rule include:

Patient Access API: Healthcare providers must implement and maintain a Patient Access API that allows patients to access their electronic health information, including claims and encounter data, through third-party applications of their choice.

Provider Directory API: CMS-regulated payers must implement and maintain a Provider Directory API to facilitate access to provider directory information, enabling patients to find and connect with healthcare providers.

3. HIPAA Privacy and Security Rules

The Health Insurance Portability and Accountability Act (HIPAA) establishes standards for the privacy and security of protected health information (PHI). While HIPAA does not specifically mandate interoperability, its privacy and security rules are foundational to safeguarding patient data during interoperable exchanges.

4. ONC Health IT Certification Program

The Office of the National Coordinator for Health Information Technology (ONC) oversees the Health IT Certification Program, which sets the standards and criteria for certifying health IT products. Certified health IT products are required to adhere to interoperability standards and support data exchange capabilities as specified by ONC.

5. HL7 FHIR Standards

Health Level Seven International (HL7) develops standards for the exchange, integration, sharing, and retrieval of electronic health information. HL7's Fast Healthcare Interoperability Resources (FHIR) standard provides a common language and set of protocols for healthcare data exchange, which has gained widespread adoption for its modern, web-based approach to healthcare data exchange.

Compliance with these regulations and requirements is essential for healthcare organizations, technology vendors, and other stakeholders to ensure interoperability, facilitate data exchange, and promote patient-centered care in the digital age.

Building Health Tech in the Interoperable Era

For developers building healthcare applications and EHR systems, understanding the intricacies of EHR interoperability is paramount. Integrating third-party applications, wearables, telemedicine platforms, and analytics tools with EHR systems requires consideration of how to implement interoperability standards, API integration, and data security protocols in order to maintain seamless data exchange and management.

How to make your EHR more interoperable

If your EHR vendor is a more rigid, traditional EHR, one solution for interoperability is adopting HL7 FHIR standards. To successfully implement these standards, you’ll need to:

  1. Assess current EHR capabilities and compatibility with FHIR standards. 
    1. Evaluate whether the vendor provides FHIR compliant APIs or if there are integration options available. If they are, there may be additional costs for leveraging those APIs.
  2. Identify Integration Points 
    1. Identify integration points within theEHR system where FHIR standards can be implemented. Integration points may include patient demographics, clinical data, medications, allergies, lab results and imaging reports.
  3. Implement FHIR APIs
    1. Work with your vendor or development team to implement FHIR-compliant APIs for data exchange. Make sure these APIs adhere to the FHIR specs and support standard data formats and terminologies 
  4. Develop Data Mapping and Transformation
    1. Develop data mapping and transformation processes to convert data between the EHR’s internal format and the FHIR standard. This may involve mapping data fields, codes, and terminology systems to ensure semantic interoperability. 
  5. Test and Validate Integration
    1. Conduct thorough testing and validation of the FHIR integration to ensure interoperability and data accuracy. Test various use cases and scenarios to identify and address any issues or discrepancies.
  6. Train Staff and End Users
    1. Provide training and education to staff and end users on the use of FHIR APIs and the benefits of interoperability. Ensure that users understand how to access and exchange data using FHIR-compliant interfaces.
  7. Monitor and Maintain Integration
    1. Regularly monitor and maintain the FHIR integration to ensure continued compatibility and performance. Stay informed about updates and changes to the FHIR standard and implement any necessary updates or enhancements accordingly.
  8. Engage with FHIR Community and Resources
    1. Stay engaged with the FHIR community and leverage available resources, such as documentation, forums, and collaboration platforms, to support your adoption efforts. Engaging with the community can provide valuable insights, best practices, and support for implementing FHIR standards effectively.

Alternative Solution

Although the aforementioned solution is feasible, you may face considerable expenses associated with integration fees and development costs, and still experience limitations in seamlessly accessing and modifying data within your own data store.

However, the emergence of headless EHRs presents new opportunities for seamless integration,  interoperability, and scaling the development of your custom tech. For example, Oystehr’s headless EHR decouples the front-end user interfaces from the back-end data storage and processing components, therefore enabling greater flexibility and workflow customization by providing the clinical services you need for your specific use cases. 

Developers can leverage headless architectures to build modular, interoperable health tech solutions that seamlessly integrate with EHR systems.

Looking Ahead: The Future of Interoperability

As technology and the policy surrounding health tech continues to evolve, the future of EHR interoperability holds promise for further innovation and collaboration. Emerging technologies such as blockchain, artificial intelligence, and Oystehr's headless EHR present new avenues for enhancing data exchange and interoperability in healthcare. By embracing innovation and leveraging interoperability standards, developers can drive transformative change in the delivery of patient-centered care.

In conclusion, EHR interoperability serves as a cornerstone of modern healthcare delivery, enabling seamless data exchange and coordinated patient care. For developers navigating the complex landscape of health tech innovation, understanding the nuances of EHR interoperability is essential. By embracing interoperability standards, leveraging headless EHR architectures, and embracing emerging technologies, developers can build transformative health tech solutions that empower healthcare providers and improve patient outcomes.

Looking to scale development of your custom health tech? Try out Oystehr for free today and request access to our sandbox.

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Mordechai Raskas
Mordechai Raskas

Chief Medical Information Officer at PM Pediatric Care