How to Build an EHR That Passes ONC Certification
Over the last few years, EHR systems have evolved to be more than just a data management system. In fact, the healthcare practices, providers, and digital health companies are expecting EHR platforms to support interoperability, secure data exchange, patient access, and regulatory compliance from day one.
This is why healthcare practices are building their own EHR and are looking to successfully pass ONC certification. This is crucially important because healthcare providers rely on certified technology to support clinical operations to support clinical operations and data sharing.
Furthermore, the high-adoption rate of use of certified EHR technologies is making the ONC certification requirements of EHR an important factor for trust and long-term success. This is the reason why building an ONC-certified EHR emphasizes interoperability through FHIR APIs, standardized data exchange, security controls, and patient access capabilities.
Despite this, many EHR development projects make the mistake of treating certification as a final testing exercise. Which, on the other hand, is a process that begins in the early development phases, like architecture planning, data modeling, API design, etc.
And the question that we frequently get asked in our interactions with healthcare providers is ‘How to get EHR ONC certified?’
Well, let’s try to explore the intricacies of how to build an EHR that passes ONC certification and try to draw an ONC certification checklist for EHR developers.
So, without further ado, let’s get started!
Understanding ONC Certification Requirements for EHR
Let’s first start with the basics: what the ONC certification is and why it matters.
Well, ONC certification is a program established by the U.S. Office of the National Coordinator for Health Information Technology (ONC). This program was established to ensure that EHR systems meet specific standards for interoperability, security, functionality, and patient data access.
This helps healthcare organizations adopt trusted technology that supports efficient care delivery, regulatory compliance, and seamless health information exchange.
Key ONC Certification Requirements for EHR Systems
Refer to the table below to know the key ONC certification requirements for EHR:
| ONC Requirement | Description |
| Interoperability & Data Exchange | Enables secure exchange of health information across EHRs, providers, and healthcare systems. |
| FHIR APIs & Patient Access | Provides standardized APIs that allow patients and authorized apps to access health data securely. |
| USCDI Compliance | Supports the capture and exchange of standardized clinical data defined by USCDI. |
| Electronic Prescribing (eRx) | Allows providers to create, transmit, and manage prescriptions electronically. |
| Privacy & Security Controls | Protects patient data through authentication, access controls, and encryption mechanisms. |
| Audit Logs & Monitoring | Tracks user activities and system events to support compliance, security, and accountability. |
| Information Blocking Compliance | Ensures electronic health information can be accessed and shared without unnecessary restrictions. |
| Certification Testing & Validation | Verifies that the EHR meets ONC requirements through approved testing and certification processes. |
Understanding the 21st Century Cures Act & Information-Blocking Requirements
When building an ONC-certified EHR, the 21st Century Cures Act and information-blocking rule are crucial to understand. You see, the 21st Century Cures Act was introduced to improve interoperability and give patients easier access to their health information.
Under this, one of the key provisions is information blocking, which prohibits practices that unnecessarily restrict the access, exchange, or use of electronic health information.
Now, for building an ONC-certified EHR, it must support open and secure data sharing while providing patients and authorized applications access to their health records.
Understanding the Full Scope of ONC-Certified EHR Development
Building an ONC-certified EHR is more than just implementing required features. Now, certification readiness begins during platform planning and architecture design, where you must align with interoperability standards, security requirements, data models, API frameworks, and compliance obligations.
Now, your certification strategy spans the entire development lifecycle, right from requirement gathering and system design to testing, certification validation, and final approval.
USCDI Compliance for EHR & Data Readiness
USCDI stands for United States Core Data for Interoperability, which defines a standardized set of health data elements that EHR systems must support to enable consistent and interoperable data exchange across the healthcare ecosystem.
As an ONC-certified EHR, your system must be capable of capturing, storing, and exchanging key USCDI data classes such as patient demographics, allergies, medications, immunizations, laboratory results, care team information, procedures, and clinical notes.
That is why you should prepare your healthcare data for certification readiness. In efforts for this, you must establish standardized data structures, mapping rules, validation processes, and data governance practices to ensure healthcare information is complete, accurate, and ready for interoperability testing and certification.
You can also use AI-powered validation tools, which can help you identify missing data fields, inconsistent records, duplicate entries, and data quality issues. These validation tools can help you improve USCDI compliance and reduce certification preparation efforts.
FHIR-Based EHR Development & Interoperability Requirements
FHIR-based EHR development or FHIR APIs have a significant role to play in ONC certification. You see, FHIR APIs are a core component of ONC certification. It enables standardized, secure, and real-time exchange of healthcare data between EHR systems, providers, patients, and third-party applications.
Now, FHIR-based EHR development can be used to support patient access and interoperability. It allows patients to securely access their health information; at the same time, it enables healthcare organizations to exchange clinical data seamlessly across different systems, improving care coordination and data accessibility.
Moreover, to meet ONC interoperability requirements, you must design your EHR system with standardized data models with FHIR-compliant APIs, secure authentication mechanisms, and workflows that support seamless health information exchanges across the healthcare ecosystem.
Security, Privacy & Compliance Requirements
Given the sensitive nature of data that you deal with on a daily basis, security, privacy, and compliance requirements are something that you must not ignore. Let’s know some of the intricacies in this
Meeting HIPAA & HITECH Security Requirements
First things first, HIPAA and HITECH establish the foundational security and privacy controls that an EHR system must implement. This includes access controls, encryption, authentication, and implemented data protection measures to support ONC certification readiness.
Supporting Auditability & Secure Healthcare Data Exchange
ONC-certified EHRs must maintain comprehensive audit logs and secure data-sharing mechanisms. This must be done to track every user activity in your system, monitor system access, and ensure the integrity of exchanged healthcare information.
Preventing Information-Blocking & Compliance Violations
Furthermore, your EHR system must be designed to facilitate authorized access, exchange, and use of electronic health information. Avoiding this can lead to violations of information blocking regulations under the 21st Century Cures Act and can lead to legal troubles, which might include fines.
Leveraging AI Monitoring Tools for Compliance & Security
AI-powered monitoring solutions can continuously analyze system activity, detect unusual behavior, identify compliance gaps, and flag potential security threats before they impact certification readiness or regulatory compliance.
Step-by-Step ONC Certification Process for EHR
Here is a table that explains in detail the step-by-step ONC certification process for EHR:
| Step | Activity | Objective |
| 1. Identify Applicable ONC Criteria | Determine which ONC certification requirements apply to your EHR’s features and target market. | Define the certification scope. |
| 2. Design for Certification Readiness | Architect the EHR around interoperability, security, USCDI, and FHIR requirements. | Avoid costly redesigns later. |
| 3. Implement Required Capabilities | Develop FHIR APIs, patient access features, audit logs, eRx, and other required functionality. | Meet ONC certification requirements. |
| 4. Prepare USCDI-Compliant Data Models | Ensure required healthcare data elements are captured, stored, and exchangeable. | Support interoperability and data exchange. |
| 5. Implement Security & Privacy Controls | Configure authentication, access controls, encryption, and auditability features. | Support HIPAA, HITECH, and ONC requirements. |
| 6. Conduct Internal Testing & Gap Analysis | Validate workflows, APIs, security controls, and interoperability functions. | Identify issues before formal testing. |
| 7. Complete Certification Testing | Work with an ONC-Authorized Testing Laboratory (ONC-ATL) to test applicable certification criteria. | Demonstrate compliance with ONC standards. |
| 8. Obtain Certification | Submit successful test results to an ONC-Authorized Certification Body (ONC-ACB). | Receive ONC certification approval. |
| 9. Maintain Compliance & Updates | Monitor regulatory changes and maintain certified functionality over time. | Preserve certification readiness. |
ONC Certification Checklist for EHR Developers
Use the scorecard below to evaluate whether your EHR platform is prepared for ONC certification testing and approval:
| Category | Readiness Check |
| Certification Planning | Applicable ONC certification criteria have been identified and mapped to product requirements. |
| USCDI Compliance | All required USCDI data classes and elements are captured, stored, and exchangeable. |
| FHIR APIs | FHIR APIs are implemented and support required interoperability workflows. |
| Patient Access | Patients can securely access, view, and retrieve their health information. |
| Interoperability | The EHR can exchange data with external healthcare systems using standardized formats. |
| Security Controls | Authentication, role-based access controls, and encryption mechanisms are in place. |
| Audit Logging | User activities, data access events, and system changes are properly logged and monitored. |
| Information Blocking Compliance | The platform supports compliant access, exchange, and use of electronic health information. |
| Data Quality & Validation | Clinical data is complete, accurate, and validated for interoperability requirements. |
| Documentation Readiness | Technical documentation, workflows, API specifications, and compliance records are prepared. |
| Internal Testing | Interoperability, security, and workflow testing have been completed successfully. |
| Certification Testing Readiness | The platform is prepared for ONC-authorized testing and certification review. |
Now, before pursuing ONC certification, here are a few things that you must cross-check with your EHR platform:
- Support USCDI-compliant healthcare data.
- Provide FHIR-based APIs for interoperability.
- Enable secure patient access to health information.
- Implement strong security, privacy, and audit controls.
- Comply with information-blocking regulations.
- Pass interoperability and certification testing requirements.
- Maintain complete technical and compliance documentation.
TIP: Practices that assess certification readiness during architecture and development typically face fewer compliance gaps, lower remediation costs, and faster certification timelines than those that treat ONC certification as a final-stage testing exercise.
Conclusion
Building an ONC-certified EHR requires more than just meeting the checklist of technical requirements. From USCDI compliance and FHIR-based interoperability to security controls and information-blocking regulations, certification readiness must be built into the platform right from the start.
On top of that, you must align the architecture, data models, APIs, and compliance strategies early in the development lifecycle with your practice, which are better positioned to reduce certification risks, accelerate testing, and achieve successful certification outcomes.
As interoperability and patient access continue to shape the future of healthcare technology, developing an ONC-certified EHR is no longer just a compliance goal, it’s a strategic investment in trust, scalability, and long-term market success.
On that note, let’s start your journey with your system readiness assessment from our EHR expert.
Frequently Asked Questions
To build ONC-certified EHR systems means developing electronic health record software that meets the interoperability, security, patient-access, and compliance standards established by the Office of the National Coordinator for Health Information Technology (ONC). Organizations that build ONC-certified EHR platforms can better support healthcare data exchange, regulatory compliance, and provider adoption.
The most important ONC certification requirements for EHR platforms include FHIR API support, USCDI-compliant data exchange, patient access capabilities, privacy and security controls, audit logging, information-blocking compliance, and interoperability with external healthcare systems. These requirements ensure healthcare data can be securely accessed and exchanged across the care continuum.
USCDI compliance for EHR systems ensures that standardized healthcare data elements such as patient demographics, medications, allergies, laboratory results, and clinical notes can be captured and exchanged consistently. Supporting USCDI requirements is a critical component of ONC certification readiness and healthcare interoperability.
FHIR-based EHR development enables standardized and secure healthcare data exchange through modern APIs. Since ONC certification requires interoperability and patient-access capabilities, FHIR implementation plays a central role in helping EHR platforms meet certification and information-sharing requirements.
Organizations looking to understand how to get EHR ONC certified should begin by identifying applicable certification criteria, implementing interoperability and security requirements, supporting USCDI data standards, preparing technical documentation, and completing testing through ONC-authorized testing and certification bodies. Planning for certification early in the development lifecycle significantly improves success rates.
The step-by-step ONC certification process for EHR systems typically includes defining certification requirements, designing certification-ready architecture, implementing required capabilities, validating USCDI and FHIR compliance, conducting internal testing, completing ONC-authorized certification testing, and obtaining certification approval through an ONC-authorized certification body.
ONC-certified EHR development requires strong security controls, including user authentication, role-based access controls, encryption, audit logging, secure API access, and data protection mechanisms. These measures help support patient privacy, regulatory compliance, and secure healthcare information exchange.
An ONC certification checklist for EHR developers typically includes USCDI compliance verification, FHIR API readiness, interoperability testing, patient-access capabilities, audit logging, security controls, information-blocking compliance, technical documentation, and certification testing preparation. The checklist helps teams identify gaps before formal certification reviews.
AI can improve certification readiness by automating data validation, identifying missing USCDI elements, detecting interoperability issues, monitoring compliance risks, and analyzing security vulnerabilities. These capabilities help organizations accelerate ONC-certified EHR development while reducing manual compliance efforts and certification risks.
