FHIR R4 Synthetic Patient Data —
Conformant Bundles, Instant Download
Conformant FHIR R4 Bundles with LOINC and SNOMED-CT coding. HL7 v2.4 ADT messages. C-CDA documents. Test your EHR, FHIR server, or interface engine without touching real patient data.
// FHIR R4 Bundle entry — Patient resource (excerpt) { "resourceType": "Patient", "id": "pt-7f3a9c2e-1d84-4b6f-a231-8e0d5c9f4a71", "meta": { "profile": ["http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient"] }, "identifier": [{ "system": "urn:oid:2.16.840.1.113883.4.6", "value": "MRN-00847291" }], "name": [{ "use": "official", "family": "Delacroix", "given": ["Marcus", "T."] }], "gender": "male", "birthDate": "1974-03-18", "address": [{ "use": "home", "line": ["4821 Northfield Drive"], "city": "Columbus", "state": "OH", "postalCode": "43215", "country": "US" }], "communication": [{ "language": { "coding": [{ "system": "urn:ietf:bcp:47", "code": "en", "display": "English" }] }, "preferred": true }], "extension": [{ "url": "http://hl7.org/fhir/us/core/StructureDefinition/us-core-race", "extension": [{ "url": "ombCategory", "valueCoding": { "system": "urn:oid:2.16.840.1.113883.6.238", "code": "2054-5", "display": "Black or African American" } }] }] }
FHIR R4 Resource Detail
What's in each FHIR R4 bundle
Every synthetic patient export includes six properly reference-chained FHIR R4 resources — enough to power server validation, app development, and migration testing without stub data.
Patient Resource
- 36+ demographic fields (name, DOB, gender, address, phone, email)
- Gender identity extension (US Core StructureDefinition)
- Race and ethnicity extensions (OMB categories)
- Preferred language via
communicationwith BCP-47 coding - MRN identifier with proper
systemOID - US Core Patient profile conformance
Encounter Resource
- Facility type, service type, and encounter class (AMB, IMP, EMER)
- Status lifecycle (planned → in-progress → finished)
- Period with precise start and end timestamps
- Reason code referencing associated Condition resources
- Participant (attending provider) with NPI reference
- Hospitalization discharge disposition where applicable
Condition Resources
- ICD-10-CM 2026 coded with SNOMED-CT clinical concept equivalent
- Clinical status (active / resolved / recurrence)
- Verification status (confirmed / provisional / differential)
- Category (encounter-diagnosis vs. problem-list-item)
- Onset date or age at diagnosis
- Subject and encounter references properly chained
Observation Resources
- LOINC 2.76 coded vitals: BP, HR, RR, temp, SpO2, BMI, weight
- LOINC-coded lab results: CBC, BMP, LFTs, HbA1c, lipids
- Reference ranges (
referenceRange.low/high) per LOINC NORMAL values - Interpretation codes (H/L/A/N abnormal flags per v2 table 0078)
- Units of measure using UCUM codes
- Subject and encounter references chained to parent resources
MedicationRequest Resources
- RxNorm-coded medications (current release, canonical URLs)
- Dosage instructions: route, frequency, dose quantity
- Reason reference linking to corresponding Condition
- Requester reference (prescribing practitioner)
- Status and intent fields (active / completed / draft)
- Days supply and dispense request where applicable
AllergyIntolerance Resources
- SNOMED-CT coded allergens (drugs, foods, environmental)
- Clinical status (active / inactive / resolved)
- Verification status (confirmed / unconfirmed)
- Reaction manifestation with SNOMED-CT coding
- Criticality (low / high / unable-to-assess)
- Recorded date and recorder reference
Interoperability Formats
All three healthcare interop formats — one dataset
The Architect tier and above delivers FHIR R4, HL7 v2.4, and C-CDA 2.1 from the same underlying patient records — so your team can test every interface without maintaining separate data sets.
FHIR R4
Architect+R4 (4.0.1) conformant Bundle resources with LOINC, SNOMED-CT, RxNorm, and ICD-10-CM coding. Proper reference chaining throughout. Passes HAPI FHIR validator out of the box.
- R4 conformant Bundle resource type
- LOINC / SNOMED-CT coded observations and conditions
- Proper
subject,encounter,recorderreferences chained - US Core Patient profile extensions
- Compatible with HAPI FHIR, Azure Health Data Services, Smile CDR
HL7 v2.x
Architect+Version 2.4 ADT^A01 messages with all required segments. Special characters properly escaped per HL7 encoding rules. Drop these directly into Mirth Connect or Rhapsody.
- v2.4 ADT^A01 message type
- MSH, EVN, PID, PV1, IN1, AL1, DG1, OBX segments
- Special characters escaped (pipe, caret, tilde, ampersand)
- Mirth Connect and Rhapsody compatible
- Compatible with Azure Health Data Services HL7 ingestor
C-CDA 2.1
Architect+Continuity of Care Document (CCD) Release 2.1 with all coded sections and human-readable narrative. Required for Meaningful Use, USCDI, and 21st Century Cures Act compliance testing.
- CCD Release 2.1 document structure
- Coded problem, medication, allergy, and results sections
- Human-readable narrative text in every section
- LOINC section codes per C-CDA 2.1 templates
- Suitable for Direct messaging and EHR transition testing
Use Cases
What teams are building with this data
From FHIR server validation to Da Vinci implementation testing — these datasets remove the bottleneck of finding safe test data.
FHIR Server Validation & Testing
Load conformant R4 bundles into HAPI FHIR, Smile CDR, or Azure Health Data Services and run your validation suite against known-good data.
SMART on FHIR App Development
Seed a FHIR sandbox with realistic patient data so your SMART app has real resources to query — patients, encounters, meds, labs — from day one.
Interface Engine Testing
Replay HL7 v2.4 ADT^A01 messages through Mirth Connect, Rhapsody, or Azure Health Data Services to validate transformations, mappings, and routing.
EHR Migration Load Testing
Populate Epic, Cerner, or Athena staging environments using FHIR R4 bulk import or HL7 ADT feeds — without risking production patient data.
CDS Hooks Development
Build and test Clinical Decision Support Hooks against realistic patient contexts — conditions, meds, labs — with proper FHIR resource references.
Da Vinci Project Implementation
Test Da Vinci PDex, ATR, CDEX, and other IG implementations against synthetic patient populations that conform to US Core profiles.
EDI 837/835 Workflow Testing
CSV and JSON exports contain all required fields for EDI claim generation — member ID, payer, diagnosis codes, procedure codes, and rendering provider.
Quality Measure & HEDIS Testing
Build synthetic cohorts with specific condition mixes to test HEDIS measure logic, quality reporting pipelines, and CMS eCQM specifications.
Technical Specifications
Technical specifications
Every version number, code system, and validator reference your integration team will ask for — before they ask.
Pricing
Unlock FHIR R4, HL7, and C-CDA
All three interoperability formats are included in the Architect tier and above. Try 5 records free — no credit card required.
Free
5 complete records in CSV. Full demographic and clinical fields — every column that appears in paid tiers.
- 5 synthetic patient records
- CSV format
- Full demographic + clinical fields
- Instant download — no credit card
Architect
1,000 records · all 7 formats
The complete interoperability kit. FHIR R4, HL7 v2.4, C-CDA 2.1, CSV, JSON, SQLite, and Parquet from the same patient cohort.
- 1,000 synthetic patient records
- FHIR R4 bundles — all 6 resource types
- HL7 v2.4 ADT^A01 messages
- C-CDA 2.1 CCD documents
- CSV, JSON, SQLite, Parquet
- 60+ clinical specialties
Premium
2,500 records · all 7 formats
Scale up for ML training, HEDIS abstraction, and population-level interface load testing. Same formats, 2.5× the cohort size.
- 2,500 synthetic patient records
- All 7 formats including FHIR R4, HL7, C-CDA
- Larger specialty distribution
- Ideal for ML model training sets
- HEDIS abstraction at scale
Need 10,000+ records, custom specialty mix, or white-label rights? Contact us for Enterprise pricing →
FAQ
Frequently asked questions
Everything your integration team will ask before approving the purchase.
Are the FHIR R4 bundles conformant to the specification?
http://loinc.org, http://snomed.info/sct, http://www.nlm.nih.gov/research/umls/rxnorm), and valid reference chaining between all six resource types. US Core Patient profile extensions are included.
What FHIR resources are included in each bundle?
subject, encounter, and recorder references resolve within the bundle.
Does the HL7 v2.x output work with Mirth Connect or Rhapsody?
Can I use these datasets for SMART on FHIR app development?
Are the LOINC and SNOMED-CT codes valid and current?
http://loinc.org). Conditions and clinical concepts use SNOMED-CT International edition codes (http://snomed.info/sct). Medications use current RxNorm codes. Diagnoses use ICD-10-CM FY2026 codes. Units use UCUM codes (http://unitsofmeasure.org).