CASE STUDY

EHR INTEGRATION
ZERO DATA LOSS
ACROSS 14 HEALTH SYSTEMS

FOR A HEALTHCARE COMPANY

EHR INTEGRATION TESTING
ABOUT CLIENT
ABOUT CLIENT
ABOUT CLIENT
ABOUT CLIENT

Healthcare integration platform connecting 14 health systems (Epic, Cerner, Allscripts, Meditech). Required perfect data accuracy for millions of patient records.

The platform needed to ensure flawless patient data exchange across multiple healthcare systems while maintaining strict data integrity and regulatory compliance.

EHR INTEGRATION TESTING
CHALLENGE
CHALLENGE
CHALLENGE
CHALLENGE
CHALLENGE

Critical issues affecting data integrity and system reliability:

Data corruption during HL7 transformations

Demographics, medications, and lab results experiencing data loss or corruption during message processing.

Inconsistent FHIR implementations across vendors

Different EHR systems implementing FHIR standards differently, creating compatibility challenges.

Race conditions creating data conflicts

Concurrent data updates causing conflicts and inconsistent patient records.

Each system had unique formats and validation rules

Complex mapping requirements across 14 different health system implementations.

ONC certification required for interoperability

Regulatory compliance requirements adding complexity to testing and validation.

Limited testing windows during maintenance periods

Restricted access to production systems limiting testing opportunities.

EHR INTEGRATION TESTING
SOLUTION
SOLUTION
SOLUTION
SOLUTION

Implementation

6-person team with healthcare interoperability expertise:

Data Validation Framework

Automated field-level comparison tools. HL7 message and FHIR R4 validators. Checksum verification and data lineage tracking.

Integration Testing (14 Systems)

End-to-end tests for ADT, labs, medications, clinical notes. Boundary conditions and medical coding validation (ICD-10, CPT, LOINC, SNOMED). Timezone, date format, and unit conversions.

Error Handling & Recovery

Network failure, timeout, and unavailability simulations. Retry mechanisms and data reconciliation. Complete audit logging for compliance.

Performance Testing

50,000+ records/hour throughput validation. Message queue and concurrent processing tests.

Tools

HL7 v2.x FHIR R4 Postman SoapUI Mirth Connect Python Java JIRA
EHR INTEGRATION TESTING
RESULTS
RESULTS
RESULTS
RESULTS
100%
Data Accuracy Maintained
37
Data Mapping Errors Fixed
14
Health Systems Integrated
Zero
Data Loss Incidents

Key Achievements:

  • 100% data accuracy maintained – Every patient data element validated across all integrations with zero loss or corruption
  • 37 data mapping errors eliminated – Critical defects caught before production that could have affected patient care
  • Successful ONC certification – Platform passed interoperability certification on first attempt
  • 14 health systems successfully integrated – Flawless integration with Epic, Cerner, Allscripts, Meditech, and custom EHR systems
  • Client commendation received – Client leadership praised thoroughness and domain expertise
  • Zero post-launch data issues – Six months in production with no data integrity incidents
  • 50,000+ patient records/hour – Platform handles peak loads with consistent data accuracy
EHR INTEGRATION TESTING
SUMMARY
SUMMARY
SUMMARY
SUMMARY

Business value

  • Comprehensive data integrity testing for HL7/FHIR integrations ensuring flawless patient data exchange across multiple healthcare systems
  • Achieved 100% data accuracy and zero data loss across all 14 integrated health systems
  • Successfully passed ONC certification on first attempt, enabling regulatory compliance

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