> ## Documentation Index > Fetch the complete documentation index at: https://help.elationhealth.com/llms.txt > Use this file to discover all available pages before exploring further. # Standardized API for patient and population services §170.315(g)(10) Standardized API for Patient and Population Services conforms to the following documents and specifications: * [HL7® FHIR® API R4 v4.0.1](http://hl7.org/fhir/R4) * [US Core Data for Interoperability v2](https://www.healthit.gov/isa/united-states-core-data-interoperability-uscdi#uscdi-v2) * [US Core Implementation Guide v5.0.1](http://hl7.org/fhir/us/core) * [FHIR® Bulk Data Access v2.0.0](http://build.fhir.org/ig/HL7/bulk-data) * [HL7 SMART App Launch Framework v1.0.0](https://hl7.org/fhir/smart-app-launch/1.0.0) * [OAuth 2.0 & OpenID Connect](https://openid.net/specs/openid-connect-core-1_0.html) Base urls for API calls published [here](/articles/fhir/service-base-urls). Full Documentation published [here](/articles/fhir/getting-started-with-standardized-api). API syntax, function names, required and optional parameters and their data types, return variables and their types/structures, exceptions and exception handling methods and their returns: | Category | API Endpoint | | ------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Allergies & Intolerances | `GET` [fhir/AllergyIntolerance/\[id\]](/articles/fhir/uscdi-allergy-intolerance)
`GET` [fhir/AllergyIntolerance](/articles/fhir/uscdi-allergy-intolerance)
`POST` [fhir/AllergyIntolerance/\_search](/articles/fhir/uscdi-allergy-intolerance) | | Assessment & Plan of Treatment | `GET` [fhir/CarePlan/\[id\]](/articles/fhir/uscdi-care-plan)
`GET` [fhir/CarePlan](/articles/fhir/uscdi-care-plan)
`POST` [fhir/CarePlan/\_search](/articles/fhir/uscdi-care-plan)
*SDOH Assessment profile:*
`GET` [fhir/Observation/\[id\]](/articles/fhir/uscdi-observation-sdoh-assessment)
`GET` [fhir/Observation](/articles/fhir/uscdi-observation-sdoh-assessment)
`POST` [fhir/Observation/\_search](/articles/fhir/uscdi-observation-sdoh-assessment)
*Survey profile:*
`GET` [fhir/Observation/\[id\]](/articles/fhir/uscdi-observation-survey)
`GET` [fhir/Observation](/articles/fhir/uscdi-observation-survey)
`POST` [fhir/Observation/\_search](/articles/fhir/uscdi-observation-survey)
*Social history profile:*
`GET` [fhir/Observation/\[id\]](/articles/fhir/uscdi-observation-social-history)
`GET` [fhir/Observation](/articles/fhir/uscdi-observation-social-history)
`POST` [fhir/Observation/\_search](/articles/fhir/uscdi-observation-social-history)

`GET` [fhir/QuestionnaireResponse/\[id\]](/articles/fhir/uscdi-questionnaire-response)
`GET` [fhir/QuestionnaireResponse](/articles/fhir/uscdi-questionnaire-response)
`POST` [fhir/QuestionnaireResponse/\_search](/articles/fhir/uscdi-questionnaire-response) | | Care Team members | `GET` [fhir/CareTeam/\[id\]](/articles/fhir/uscdi-care-team)
`GET` [fhir/CareTeam](/articles/fhir/uscdi-care-team)
`POST` [fhir/CareTeam/\_search](/articles/fhir/uscdi-care-team)
`GET` [fhir/RelatedPerson/\[id\]](/articles/fhir/uscdi-care-team-related-person)
`GET` [fhir/RelatedPerson](/articles/fhir/uscdi-care-team-related-person)
`POST` [fhir/RelatedPerson/\_search](/articles/fhir/uscdi-care-team-related-person) | | Clinical Notes | `GET` [fhir/DocumentReference/\[id\]](/articles/fhir/uscdi-clinical-notes-document-reference)
`GET` [fhir/DocumentReference](/articles/fhir/uscdi-clinical-notes-document-reference)
`POST` [fhir/DocumentReference/\_search](/articles/fhir/uscdi-clinical-notes-document-reference)
`GET` [fhir/DiagnosticReport/\[id\]](/articles/fhir/uscdi-clinical-tests-diagnostic-report)
`GET` [fhir/DiagnosticReport](/articles/fhir/uscdi-clinical-tests-diagnostic-report)
`POST` [fhir/DiagnosticReport/\_search](/articles/fhir/uscdi-clinical-tests-diagnostic-report) | | Clinical Tests | `GET` [fhir/Observation/\[id\]](/articles/fhir/uscdi-clinical-tests-observation)
`GET` [fhir/Observation](/articles/fhir/uscdi-clinical-tests-observation)
`POST` [fhir/Observation/\_search](/articles/fhir/uscdi-clinical-tests-observation)
`GET` [fhir/DiagnosticReport/\[id\]](/articles/fhir/uscdi-clinical-tests-diagnostic-report)
`GET` [fhir/DiagnosticReport](/articles/fhir/uscdi-clinical-tests-diagnostic-report)
`POST` [fhir/DiagnosticReport/\_search](/articles/fhir/uscdi-clinical-tests-diagnostic-report) | | Diagnostic imaging | `GET` [fhir/Observation/\[id\]](/articles/fhir/uscdi-observation-imaging-result)
`GET` [fhir/Observation](/articles/fhir/uscdi-observation-imaging-result)
`POST` [fhir/Observation/\_search](/articles/fhir/uscdi-observation-imaging-result)
`GET` [fhir/DiagnosticReport/\[id\]](/articles/fhir/uscdi-clinical-tests-diagnostic-report)
`GET` [fhir/DiagnosticReport](/articles/fhir/uscdi-clinical-tests-diagnostic-report)
`POST` [fhir/DiagnosticReport/\_search](/articles/fhir/uscdi-clinical-tests-diagnostic-report) | | Encounters | `GET` [fhir/Encounter/\[id\]](/articles/fhir/uscdi-encounter-information)
`GET` [fhir/Encounter](/articles/fhir/uscdi-encounter-information)
`POST` [fhir/Encounter/\_search](/articles/fhir/uscdi-encounter-information)
`GET` [fhir/Condition/\[id\]](/articles/fhir/uscdi-encounter-diagnosis-condition)
`GET` [fhir/Condition](/articles/fhir/uscdi-encounter-diagnosis-condition)
`POST` [fhir/Condition/\_search](/articles/fhir/uscdi-encounter-diagnosis-condition) | | Goals | `GET` [fhir/Goal/\[id\]](/articles/fhir/uscdi-goal)
`GET` [fhir/Goal](/articles/fhir/uscdi-goal)
`POST` [fhir/Goal/\_search](/articles/fhir/uscdi-goal) | | Health Concerns | `GET` [fhir/Condition/\[id\]](/articles/fhir/uscdi-health-concerns-condition)
`GET` [fhir/Condition](/articles/fhir/uscdi-health-concerns-condition)
`POST` [fhir/Condition/\_search](/articles/fhir/uscdi-health-concerns-condition) | | Immunizations | `GET` [fhir/Immunization/\[id\]](/articles/fhir/uscdi-immunization)
`GET` [fhir/Immunization](/articles/fhir/uscdi-immunization)
`POST` [fhir/Immunization/\_search](/articles/fhir/uscdi-immunization) | | Laboratory Results | `GET` [fhir/Observation/\[id\]](/articles/fhir/uscdi-laboratory-results-observation)
`GET` [fhir/Observation](/articles/fhir/uscdi-laboratory-results-observation)
`POST` [fhir/Observation/\_search](/articles/fhir/uscdi-laboratory-results-observation)
`GET` [fhir/DiagnosticReport/\[id\]](/articles/fhir/uscdi-laboratory-results-diagnostic-report)
`GET` [fhir/DiagnosticReport](/articles/fhir/uscdi-laboratory-results-diagnostic-report)
`POST` [fhir/DiagnosticReport/\_search](/articles/fhir/uscdi-laboratory-results-diagnostic-report) | | Medications | `GET` [fhir/Medication/\[id\]](/articles/fhir/uscdi-medication)
`GET` [fhir/Medication](/articles/fhir/uscdi-medication)
`POST` [fhir/Medication/\_search](/articles/fhir/uscdi-medication)
`GET` [fhir/MedicationRequest/\[id\]](/articles/fhir/uscdi-medication-request)
`GET` [fhir/MedicationRequest](/articles/fhir/uscdi-medication-request)
`POST` [fhir/MedicationRequest/\_search](/articles/fhir/uscdi-medication-request) | | Patient Demographics | `GET` [fhir/Patient/\[id\]](/articles/fhir/uscdi-patient)
`GET` [fhir/Patient](/articles/fhir/uscdi-patient)
`POST` [fhir/Patient/\_search](/articles/fhir/uscdi-patient) | | Problems | `GET` [fhir/Condition/\[id\]](/articles/fhir/uscdi-health-concerns-condition)
`GET` [fhir/Condition](/articles/fhir/uscdi-health-concerns-condition)
`POST` [fhir/Condition/\_search](/articles/fhir/uscdi-health-concerns-condition) | | Procedures | `GET` [fhir/Procedure/\[id\]](/articles/fhir/uscdi-procedure)
`GET` [fhir/Procedure](/articles/fhir/uscdi-procedure)
`POST` [fhir/Procedure/\_search](/articles/fhir/uscdi-procedure)
`GET` [fhir/ServiceRequest/\[id\]](/articles/fhir/uscdi-procedure-service-request)
`GET` [fhir/ServiceRequest](/articles/fhir/uscdi-procedure-service-request)
`POST` [fhir/ServiceRequest/\_search](/articles/fhir/uscdi-procedure-service-request) | | Provenance | `GET` [fhir/Provenance/\[id\]](/articles/fhir/uscdi-provenance)
`GET` [fhir/Provenance](/articles/fhir/uscdi-provenance)
`POST` [fhir/Provenance/\_search](/articles/fhir/uscdi-provenance) | | Smoking Status | `GET` [fhir/Observation/\[id\]](/articles/fhir/uscdi-smoking-status)
`GET` [fhir/Observation](/articles/fhir/uscdi-smoking-status)
`POST` [fhir/Observation/\_search](/articles/fhir/uscdi-smoking-status) | | Vital Signs | `GET` [fhir/Observation/\[id\]](/articles/fhir/uscdi-vital-signs)
`GET` [fhir/Observation](/articles/fhir/uscdi-vital-signs)
`POST` [fhir/Observation/\_search](/articles/fhir/uscdi-vital-signs) | | Unique Device Identifiers | `GET` [fhir/Device/\[id\]](/articles/fhir/uscdi-device)
`GET` [fhir/Device](/articles/fhir/uscdi-device)
`POST` [fhir/Device/\_search](/articles/fhir/uscdi-device) | | Others | `GET` [fhir/Binary/\[id\]](/articles/fhir/hl7-fhir-binary)
`GET` [fhir/Location/\[id\]](/articles/fhir/us-core-location)
`GET` [fhir/Location](/articles/fhir/us-core-location)
`POST` [fhir/Location/\_search](/articles/fhir/us-core-location)
`GET` [fhir/Practitioner/\[id\]](/articles/fhir/us-core-practitioner)
`GET` [fhir/Practitioner](/articles/fhir/us-core-practitioner)
`POST` [fhir/Practitioner/\_search](/articles/fhir/us-core-practitioner)
`GET` [fhir/PractitionerRole/\[id\]](/articles/fhir/us-core-practitioner-role)
`GET` [fhir/PractitionerRole](/articles/fhir/us-core-practitioner-role)
`POST` [fhir/PractitionerRole/\_search](/articles/fhir/us-core-practitioner-role) | | Bulk export | `GET` [fhir/Group/\[id\]/\$export](/articles/fhir/bulk-data-export) |