# Elation Help Center: API Reference > Help center documentation for Elation EHR — clinical workflows, billing, scheduling, prescriptions, and practice management. ## API Reference - [API Reference / REST API (547 pages)](https://help.elationhealth.com/_llms/api-reference/rest-api.md): Documentation for API Reference / REST API. ### API Reference - [API Reference](https://help.elationhealth.com/api-reference.md): Connect your tools and systems to Elation EHR using the REST API or FHIR API. ### FHIR API #### Overview - [Getting started with the Elation FHIR API](https://help.elationhealth.com/articles/fhir/getting-started-with-standardized-api.md) - [Supported software and frameworks versions](https://help.elationhealth.com/articles/fhir/software-versions.md) - [Standardized API for patient and population services](https://help.elationhealth.com/articles/fhir/standardized-api-g10.md) - [Service Base URLs](https://help.elationhealth.com/articles/fhir/service-base-urls.md) - [Errors and exceptions](https://help.elationhealth.com/articles/fhir/errors.md) #### Security & Authorization - [SMART on FHIR Authorization](https://help.elationhealth.com/articles/fhir/smart-on-fhir-authorization.md) - [Authorization](https://help.elationhealth.com/articles/fhir/authentication-authorization.md) #### Developer Onboarding - [Developers Application onboarding](https://help.elationhealth.com/articles/fhir/app-client-registration.md) #### General Syntax - [General Guidance](https://help.elationhealth.com/articles/fhir/us-core-guidance.md) #### US Core Data for Interoperability - [US Core 6.1.0 profiles and USCDI v3 data elements](https://help.elationhealth.com/articles/fhir/us-core-to-uscdi.md) #### Resources ##### Allergies and Intolerances - [Allergies and Intolerances](https://help.elationhealth.com/articles/fhir/uscdi-allergy-intolerance.md) ##### Assessment and Plan of Treatment - [Assessment and Plan of Treatment](https://help.elationhealth.com/articles/fhir/uscdi-care-plan.md) - [Observation SDOH Assessment](https://help.elationhealth.com/articles/fhir/uscdi-observation-sdoh-assessment.md) - [Observation Social History](https://help.elationhealth.com/articles/fhir/uscdi-observation-social-history.md) - [Observation Survey](https://help.elationhealth.com/articles/fhir/uscdi-observation-survey.md) - [Questionnaire Response](https://help.elationhealth.com/articles/fhir/uscdi-questionnaire-response.md) ##### Binary - [Binary](https://help.elationhealth.com/articles/fhir/hl7-fhir-binary.md) ##### Care Team Members - [Care Team Members](https://help.elationhealth.com/articles/fhir/uscdi-care-team.md) - [Related Person](https://help.elationhealth.com/articles/fhir/uscdi-care-team-related-person.md) - [Practitioner](https://help.elationhealth.com/articles/fhir/us-core-practitioner.md) - [Practitioner Role](https://help.elationhealth.com/articles/fhir/us-core-practitioner-role.md) - [Organization](https://help.elationhealth.com/articles/fhir/us-core-organization.md) - [Location](https://help.elationhealth.com/articles/fhir/us-core-location.md) ##### Clinical Notes - [Clinical Notes](https://help.elationhealth.com/articles/fhir/uscdi-clinical-notes-document-reference.md) - [Clinical Tests](https://help.elationhealth.com/articles/fhir/uscdi-clinical-tests-diagnostic-report.md) ##### Clinical Tests - [Observation Clinical Result](https://help.elationhealth.com/articles/fhir/uscdi-observation-clinical-result.md) - [Clinical Tests](https://help.elationhealth.com/articles/fhir/uscdi-clinical-tests-observation.md) ##### Diagnostic Imaging - [Observation Imaging Result](https://help.elationhealth.com/articles/fhir/uscdi-observation-imaging-result.md) ##### Encounter Information - [Encounter Information](https://help.elationhealth.com/articles/fhir/uscdi-encounter-information.md) - [Encounter Diagnosis](https://help.elationhealth.com/articles/fhir/uscdi-encounter-diagnosis-condition.md) ##### Goals - [Goal](https://help.elationhealth.com/articles/fhir/uscdi-goal.md) ##### Group - [Group](https://help.elationhealth.com/articles/fhir/hl7-fhir-group.md) ##### Health Concerns - [Health Concerns](https://help.elationhealth.com/articles/fhir/uscdi-health-concerns-condition.md) ##### Health Insurance Information - [Coverage](https://help.elationhealth.com/articles/fhir/uscdi-coverage.md) ##### Health Status - [Simple Observation Information](https://help.elationhealth.com/articles/fhir/ucsdi-simple-observation.md) - [Observation Screening Assessment Information](https://help.elationhealth.com/articles/fhir/uscdi-observation-screening-assessment.md) ##### Immunizations - [Immunization](https://help.elationhealth.com/articles/fhir/uscdi-immunization.md) ##### Implantable Devices - [Implantable Device](https://help.elationhealth.com/articles/fhir/uscdi-device.md) ##### Laboratory - [Laboratory Results Observation](https://help.elationhealth.com/articles/fhir/uscdi-laboratory-results-observation.md) - [Laboratory Results Reporting](https://help.elationhealth.com/articles/fhir/uscdi-laboratory-results-diagnostic-report.md) - [Specimen Information](https://help.elationhealth.com/articles/fhir/uscdi-specimen.md) ##### Medications - [Medication](https://help.elationhealth.com/articles/fhir/uscdi-medication.md) - [Medication Request](https://help.elationhealth.com/articles/fhir/uscdi-medication-request.md) - [MedicationDispense](https://help.elationhealth.com/articles/fhir/uscdi-medication-dispense.md) ##### Patient Demographics - [Patient](https://help.elationhealth.com/articles/fhir/uscdi-patient.md) - [Observation Sexual Orientation](https://help.elationhealth.com/articles/fhir/uscdi-observation-sexual-orientation.md) - [Observation Occupation](https://help.elationhealth.com/articles/fhir/uscdi-observation-occupation.md) ##### Problems - [Health Concerns](https://help.elationhealth.com/articles/fhir/uscdi-health-concerns-condition.md) ##### Procedures - [Procedure](https://help.elationhealth.com/articles/fhir/uscdi-procedure.md) - [Service Request](https://help.elationhealth.com/articles/fhir/uscdi-procedure-service-request.md) ##### Provenance - [Provenance](https://help.elationhealth.com/articles/fhir/uscdi-provenance.md) ##### Smoking Status - [Smoking Status](https://help.elationhealth.com/articles/fhir/uscdi-smoking-status.md) ##### Vital Signs - [Vital Signs](https://help.elationhealth.com/articles/fhir/uscdi-vital-signs.md) ##### Attachments - [Attachments](https://help.elationhealth.com/articles/fhir/elation-attachments.md) #### RESTful FHIR API - [RESTful API](https://help.elationhealth.com/articles/fhir/kodjin-restful-api.md) - [Search Operations](https://help.elationhealth.com/articles/fhir/kodjin-search.md) - [Bulk Data Export](https://help.elationhealth.com/articles/fhir/bulk-data-export.md) ### HL7 Interface #### Overview - [Elation HL7 Interface](https://help.elationhealth.com/articles/hl7/hl7-integration-overview.md) - [Connectivity](https://help.elationhealth.com/articles/hl7/oru-connectivity.md) - [How does Elation fetch results and route them?](https://help.elationhealth.com/articles/hl7/oru-result-fetching.md) - [Testing and Going Live](https://help.elationhealth.com/articles/hl7/oru-testing-and-go-live.md) - [Partial, Appended, Final, and Duplicate Results](https://help.elationhealth.com/articles/hl7/oru-result-types.md) - [Embedded PDFs](https://help.elationhealth.com/articles/hl7/oru-embedded-pdfs.md) #### Lab Result HL7 ORU - [Message Header (MSH)](https://help.elationhealth.com/articles/hl7/oru-lab-msh.md) - [Patient Identification (PID)](https://help.elationhealth.com/articles/hl7/oru-lab-pid.md) - [Common Order (ORC)](https://help.elationhealth.com/articles/hl7/oru-lab-orc.md) - [Observation Order (OBR)](https://help.elationhealth.com/articles/hl7/oru-lab-obr.md) - [Observation/Result (OBX)](https://help.elationhealth.com/articles/hl7/oru-lab-obx.md) - [Notes and Comments (NTE)](https://help.elationhealth.com/articles/hl7/oru-lab-nte.md) - [Sample HL7 Message](https://help.elationhealth.com/articles/hl7/oru-lab-sample-message.md) #### Radiology and Transcription HL7 ORU - [Message Header (MSH)](https://help.elationhealth.com/articles/hl7/oru-rad-msh.md) - [Patient Identification (PID)](https://help.elationhealth.com/articles/hl7/oru-rad-pid.md) - [Common Order (ORC)](https://help.elationhealth.com/articles/hl7/oru-rad-orc.md) - [Observation Order (OBR)](https://help.elationhealth.com/articles/hl7/oru-rad-obr.md) - [Observation/Result (OBX)](https://help.elationhealth.com/articles/hl7/oru-rad-obx.md) - [Notes and Comments (NTE)](https://help.elationhealth.com/articles/hl7/oru-rad-nte.md) - [Sample HL7 Message](https://help.elationhealth.com/articles/hl7/oru-rad-sample-message.md) #### Lab Order HL7 ORM - [Lab Order Overview](https://help.elationhealth.com/articles/hl7/orm-overview.md) - [Connectivity](https://help.elationhealth.com/articles/hl7/orm-connectivity.md) - [HL7 ORM Overview](https://help.elationhealth.com/articles/hl7/orm-message-overview.md) - [Message Header (MSH)](https://help.elationhealth.com/articles/hl7/orm-msh.md) - [Patient Identification (PID)](https://help.elationhealth.com/articles/hl7/orm-pid.md) - [Next of Kin (NK1)](https://help.elationhealth.com/articles/hl7/orm-nk1.md) - [Insurance (IN1)](https://help.elationhealth.com/articles/hl7/orm-in1.md) - [Guarantor (GT1)](https://help.elationhealth.com/articles/hl7/orm-gt1.md) - [Patient General Clinical Information (ZCI)](https://help.elationhealth.com/articles/hl7/orm-zci.md) - [Common Order (ORC)](https://help.elationhealth.com/articles/hl7/orm-orc.md) - [Observation Request (OBR)](https://help.elationhealth.com/articles/hl7/orm-obr.md) - [Diagnosis (DG1)](https://help.elationhealth.com/articles/hl7/orm-dg1.md) - [Ask On Entry (OBX)](https://help.elationhealth.com/articles/hl7/orm-obx.md) - [Notes and Comments (NTE)](https://help.elationhealth.com/articles/hl7/orm-nte.md) - [Sample HL7 ORM Message](https://help.elationhealth.com/articles/hl7/orm-sample-message.md)