> For the complete documentation index, see [llms.txt](https://help.santesuite.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation.md).

# API Documentation

- [Act](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/act.md)
- [Act Relationship](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/act-relationship.md)
- [Application Entity](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/application-entity.md)
- [Bundle](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/bundle.md)
- [Care Pathway Definition](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/care-pathway-definition.md)
- [Care Plan](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/care-plan.md)
- [Coded Observation](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/coded-observation.md)
- [Code System](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/code-system.md)
- [Concept](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/concept.md)
- [Concept Class](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/concept-class.md)
- [Concept Extension](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/concept-extension.md)
- [Concept Reference Term](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/concept-reference-term.md)
- [Concept Relationship](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/concept-relationship.md)
- [Concept Relationship Type](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/concept-relationship-type.md)
- [Concept Set](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/concept-set.md)
- [Container](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/container.md)
- [Date Observation](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/date-observation.md)
- [Device Entity](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/device-entity.md)
- [Device Mailbox](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/device-mailbox.md)
- [Entity](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/entity.md)
- [Entity Extension](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/entity-extension.md)
- [Entity Relationship](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/entity-relationship.md)
- [Extension Type](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/extension-type.md)
- [Identity Domain](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/identity-domain.md)
- [Mailbox](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/mailbox.md)
- [Mailbox Mail Message](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/mailbox-mail-message.md)
- [Mail Message](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/mail-message.md)
- [Manufactured Material](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/manufactured-material.md)
- [Material](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/material.md)
- [Narrative](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/narrative.md)
- [Observation](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/observation.md)
- [Organization](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/organization.md)
- [Patient](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/patient.md)
- [Patient Encounter](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/patient-encounter.md)
- [Person](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/person.md)
- [Place](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/place.md)
- [Place Service](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/place-service.md)
- [Procedure](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/procedure.md)
- [Protocol](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/protocol.md)
- [Provider](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/provider.md)
- [Quantity Observation](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/quantity-observation.md)
- [Reference Term](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/reference-term.md)
- [Stock Ledger Entry](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/stock-ledger-entry.md)
- [Substance Administration](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/substance-administration.md)
- [Template Definition](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/template-definition.md)
- [Text Observation](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/text-observation.md)
- [User Entity](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/user-entity.md)
- [Health Data Service Interface (HDSI)](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/health-data-service-interface-hdsi.md)
- [Models](https://help.santesuite.org/developers/service-apis/health-data-service-interface-hdsi/api-documentation/models.md)