Epic to Oracle Health (Cerner) Migration Guide
A complete step-by-step guide for migrating your EMR system from Epic to Oracle Health (Cerner). Includes data migration checklist, timeline estimates, cost projections, common challenges, and expert tips.
How do I migrate from Epic to Oracle Health (Cerner)?
Migrating from Epic to Oracle Health (Cerner) is a high-difficulty process that typically takes 12-24 months and costs $5M-$50M+ depending on organization size. Key steps include: form a migration steering committee, conduct a thorough data audit, negotiate contracts and extract data from epic, and more. The migration involves transferring 10 categories of clinical and administrative data.
Timeline
Estimated Cost
Migration Process
Difficulty Level
Estimated Cost
Includes licensing, data migration, implementation services, training, and contingency. Actual costs vary based on organization size, data complexity, and customization requirements.
Data Migration Checklist
The following data categories can be migrated from Epic to Oracle Health (Cerner):
Step-by-Step Migration Process
Form a Migration Steering Committee
Assemble a cross-functional team including clinical leadership (CMO/CMIO), IT, nursing informatics, revenue cycle, compliance, and department champions. Establish governance, budget authority, and decision-making protocols for the 12-24 month project.
Conduct a Thorough Data Audit
Inventory all data in Epic including custom fields, SmartPhrases, clinical templates, order sets, and integrations. Map every data element to its Cerner Millennium equivalent. Identify data that cannot be migrated and develop a plan for archiving it.
Negotiate Contracts and Extract Data from Epic
Work with Epic to obtain data extraction files in standard formats (CCDA, HL7 FHIR, CSV). Epic charges for data extraction services -- budget accordingly. Negotiate Cerner implementation contracts including migration support, training, and go-live assistance.
Design the Cerner Environment
Build out the Cerner Millennium configuration including clinical domains, PowerChart templates, PowerPlans (order sets), pharmacy build, and revenue cycle setup. Replicate critical Epic workflows in Cerner and identify where workflow redesign is needed.
Develop and Test Data Migration Scripts
Create ETL (Extract, Transform, Load) pipelines to move data from Epic format to Cerner structures. Run multiple test migrations with validation checks. Compare migrated data against source data for accuracy, completeness, and clinical integrity.
Train Staff on Cerner PowerChart
Develop role-based training programs for physicians, nurses, medical assistants, billing staff, and front desk. Plan for 40-80 hours of training per clinical user. Use super-users and at-the-elbow support during go-live.
Run Parallel Systems and Go Live
Operate both systems simultaneously for a defined period to validate data accuracy and workflow continuity. Execute the cutover during a low-volume period (typically a holiday weekend). Maintain Epic in read-only mode for historical record access during the transition period.
Post-Go-Live Stabilization
Provide intensive 24/7 support for the first 2-4 weeks post go-live. Monitor system performance, data integrity, and user feedback. Address issues through rapid-response teams and daily leadership huddles.
Common Challenges
Epic uses proprietary data structures that do not map one-to-one to Cerner Millennium fields
Custom Epic workflows and SmartPhrases must be rebuilt in Cerner PowerChart
MyChart patient portal data requires careful migration to HealtheLife
Epic Caboodle analytics and reporting configurations cannot transfer directly
Staff retraining is substantial -- Epic and Cerner have fundamentally different user interfaces
Interoperability connections (Care Everywhere) must be re-established via CommonWell
Historical scanned documents and attachments may require manual re-indexing
Both vendors have different approaches to order entry and clinical decision support rules
Expert Migration Tips
Budget 15-20% contingency -- enterprise EMR migrations almost always exceed initial estimates
Keep Epic in read-only archive mode for at least 2 years after migration for legal and compliance access
Prioritize migrating the last 3-5 years of active clinical data first; archive older records separately
Engage Cerner professional services early -- their migration team has tools and experience for Epic conversions
Plan for a productivity dip of 20-30% in the first 3 months post go-live and adjust scheduling accordingly
Use FHIR APIs where possible for structured data transfer -- it simplifies validation significantly
Frequently Asked Questions
Why would a hospital switch from Epic to Cerner (Oracle Health)?
Common reasons include Oracle cloud infrastructure investment, cost reduction for community hospitals, government/military mandates (MHS Genesis), acquisition by a health system already on Cerner, or dissatisfaction with Epic pricing and contract terms.
How long does an Epic to Cerner migration typically take?
For a mid-sized health system (3-10 hospitals), expect 12-24 months from contract signing to full go-live. Larger integrated delivery networks may take 2-4 years for phased rollouts across all facilities.
Will patients lose access to their MyChart records?
Patient records are migrated to Cerner HealtheLife, but historical MyChart access will end. Best practice is to advise patients to download their records from MyChart before the cutover and provide a transition period with both portals active.
What data cannot be migrated from Epic to Cerner?
Epic SmartPhrases, custom InBasket workflows, Epic-specific decision support rules, Caboodle analytics configurations, and some third-party Epic App Orchard integrations typically cannot be directly migrated and must be rebuilt.
Migration Summary
- From
- Epic
- Difficulty
- High
- Timeline
- 12-24 months
- Est. Cost
- $5M-$50M+ depending on organization size
- Steps
- 8 steps
- Data Types
- 10 categories
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