Healthcare FHIR R4 data schema reference

Deprecated: Agent Search for healthcare is deprecated and won't be available after May 15, 2027.

Agent Search supports a subset of FHIR R4 resources. This page lists the supported FHIR resources and elements. For each resource, this page shows a table of the Google-defined schema configuration, with the following details:

• A check mark to indicate whether the elements are indexable, searchable, and retrievable, by default. To understand these field settings, see Configure field settings.
• A check mark to indicate whether the elements are considered as input fields when an LLM answer is generated. That is, to generate the input prompt for the LLM answer, these fields are retrieved from the documents. This field cannot be configured as part of the schema configuration.

Edit the schema configuration

To edit the schema configuration, select the Custom schema option when you create the data store. You can edit the schema configuration when you create the data store or later.

Resource-level specification

Agent Search supports the following resources and resource references:

• Resources:
  • AllergyIntolerance
  • Appointment
  • Basic
  • CarePlan
  • Composition
  • Condition
  • DiagnosticReport
  • DocumentReference
  • Encounter
  • ImagingStudy
  • Immunization
  • MedicationAdministration
  • MedicationDispense
  • MedicationRequest
  • MedicationStatement
  • Observation
  • Patient
  • Procedure
  • ServiceRequest
• Resource references:
  • Binary
  • Medication
  • Practitioner

Data-store-level specification

The following properties within the data store are supported.

Property	Indexable	Searchable	Retrievable
id	✔	—	✔
resource_type	✔	—	✔
resource_datetime	✔	—	✔
patient_id	✔	—	✔

Field-level specification

Agent Search supports a subset of FHIR data elements within each of the supported FHIR resources. The following sections list the supported elements for all the supported FHIR resources and mention whether the elements are indexable, searchable, and retrievable under these conditions:

• If repeated elements have an empty index or [], all instances of this element are supported. For example, in an AllergyIntolerance resource, all instances of clinicalStatus.coding[].code are supported.
• If repeated elements have a specific index or [0], only the first instance is supported. For example, in a Composition resource only the first instance of author[0].display is supported.
• Relative resource references are supported with the format Resource/resourceId. For example, subject.reference must have the value as Patient/034AB16.
• Absolute references are only supported for Binary resources and with data type set to attachment. Absolute references are only supported for Cloud Storage locations that conform to the following pattern: gs://BUCKET_NAME/FILE_PATH.
• Internal or logical references aren't supported and such reference aren't resolved.

AllergyIntolerance

The following elements within the AllergyIntolerance resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
asserter.display	—	✔	✔	—	—	—
asserter.reference	—	—	✔	—	✔	Practitioner only.
clinicalStatus.coding[].code	✔	✔	✔	—	—	—
clinicalStatus.coding[].display	—	✔	✔	—	—	—
clinicalStatus.coding[].system	—	—	✔	—	—	—
code.coding[].code	—	—	✔	—	—	—
code.coding[].display	—	✔	✔	—	—	—
code.coding[].system	—	—	✔	—	—	—
code.text	✔	✔	✔	—	—	—
encounter.reference	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
note[].text	—	✔	✔	✔	—	—
patient.reference	✔	—	✔	—	✔	Patient only.
reaction[].description	—	✔	✔	✔	—	—
reaction[].manifestation[].text	—	—	✔	✔	—	—
reaction[].severity	—	—	✔	✔	—	—
recordedDate	✔	—	✔	✔	—	—
recorder.display	—	✔	✔	—	—	—
recorder.reference	—	—	✔	—	✔	Practitioner only.
verificationStatus.coding[].code	✔	✔	✔	—	—	—
verificationStatus.coding[].display	—	✔	✔	—	—	—
verificationStatus.coding[].system	—	—	✔	—	—	—

Appointment

The following elements within the Appointment resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
appointmentType.coding[].code	✔	—	✔	—	—	—
appointmentType.coding[].display	✔	—	✔	—	—	—
appointmentType.coding[].system	✔	—	✔	—	—	—
comment	—	✔	✔	—	—	—
created	✔	—	✔	—	—	—
description	✔	✔	✔	—	—	—
id	✔	—	✔	—	—	—
participant[].actor.reference	✔	—	✔	—	—	—
participant[].type[].coding[].code	✔	—	✔	—	—	—
participant[].type[].coding[].display	✔	✔	✔	—	—	—
participant[].type[].coding[].system	✔	—	✔	—	—	—
participant[].type[].text	✔	✔	✔	—	—	—
reasonCode[].coding[].code	✔	—	✔	—	—	—
reasonCode[].coding[].display	✔	✔	✔	—	—	—
reasonCode[].coding[].system	✔	—	✔	—	—	—
reasonCode[].text	✔	✔	✔	—	—	—
serviceCategory[].coding[].code	✔	—	✔	—	—	—
serviceCategory[].coding[].display	✔	✔	✔	—	—	—
serviceCategory[].coding[].system	✔	—	✔	—	—	—
serviceCategory[].text	✔	✔	✔	—	—	—
start	✔	—	✔	—	—	—
status	—	—	✔	—	—	—

Basic

The following elements within the Basic resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
author.display	—	✔	✔	—	—	—
author.reference	—	—	✔	—	✔	Practitioner only.
code.coding[].code	—	—	✔	—	—	—
code.coding[].display	—	✔	✔	—	—	—
code.coding[].system	—	—	✔	—	—	—
code.text	✔	✔	✔	—	—	—
created	✔	—	✔	—	—	—
id	✔	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
subject.reference	✔	—	✔	—	✔	Patient only.
text.div	—	✔	✔	—	—	—

CarePlan

The following elements within the CarePlan resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
activity[].detail.description	—	✔	✔	—	—	—
activity[].progress[].text	—	✔	✔	—	—	—
addresses[].display	—	—	✔	—	—	—
addresses[].reference	—	—	✔	—	—	—
author.display	—	✔	✔	—	—	—
author.reference	✔	—	✔	—	—	—
category[].coding[].code	✔	—	✔	—	—	—
category[].coding[].display	—	✔	✔	—	—	—
category[].coding[].system	—	—	✔	—	—	—
category[].text	✔	✔	✔	—	—	—
created	✔	—	✔	—	—	—
description	—	✔	✔	—	—	—
encounter.reference	—	—	✔	—	—	—
goal[].display	—	—	✔	—	—	—
goal[].reference	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
note[].text	—	✔	✔	—	—	—
period.end	✔	—	✔	—	—	—
period.start	✔	—	✔	—	—	—
status	—	—	✔	—	—	—
subject.reference	✔	—	✔	—	—	—
text.div	—	—	✔	—	—	—
title	—	✔	✔	—	—	—

Composition

The following elements within the Composition resource are supported.

Note: For a Composition resource to be indexable, it must have the section[].text.div element.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
author[0].display	—	✔	✔	—	—	—
author[0].reference	—	—	✔	—	✔	Practitioner only.
category[].coding[].code	—	—	✔	—	—	—
category[].coding[].display	—	✔	✔	—	—	—
category[].coding[].system	—	—	✔	—	—	—
category[].text	—	✔	✔	—	—	—
date	✔	—	✔	✔	—	—
encounter.reference	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
section[].text.div	—	✔	✔	✔	—	This field must be present for the resource to be indexable.
status	—	—	✔	—	—	—
subject.reference	✔	—	✔	—	✔	Patient only.
title	—	—	✔	✔	—	—
type.coding[].code	—	—	✔	—	—	—
type.coding[].display	✔	✔	✔	—	—	—
type.coding[].system	—	—	✔	—	—	—
type.text	✔	✔	✔	—	—	—

Condition

The following elements within the Condition resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
asserter.display	—	✔	✔	✔	—	—
asserter.reference	—	—	✔	—	✔	Practitioner only.
bodySite[].coding[].code	✔	—	✔	—	—	—
bodySite[].coding[].display	—	✔	✔	—	—	—
bodySite[].coding[].system	—	—	✔	—	—	—
bodySite[].text	✔	✔	✔	✔	—	—
category[].coding[].code	✔	—	✔	—	—	—
category[].coding[].display	—	✔	✔	—	—	—
category[].coding[].system	—	—	✔	—	—	—
category[].text	✔	✔	✔	✔	—	—
clinicalStatus.coding[].code	—	—	✔	—	—	—
clinicalStatus.coding[].display	—	—	✔	✔	—	—
clinicalStatus.coding[].system	—	—	✔	—	—	—
code.coding[].code	✔	✔	✔	—	—	—
code.coding[].display	—	✔	✔	—	—	—
code.coding[].system	—	—	✔	—	—	—
code.text	✔	✔	✔	✔	—	—
encounter.reference	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
note[].text	—	✔	✔	✔	—	—
onsetDateTime	✔	—	✔	—	—	—
onsetPeriod.end	✔	—	✔	—	—	—
onsetPeriod.start	✔	—	✔	—	—	—
recordedDate	✔	—	✔	✔	—	—
recorder.display	—	✔	✔	✔	—	—
recorder.reference	—	—	✔	—	✔	Practitioner only.
subject.reference	✔	—	✔	—	✔	Patient only.
verificationStatus.coding[].code	—	—	✔	—	—	—
verificationStatus.coding[].display	—	—	✔	✔	—	—
verificationStatus.coding[].system	—	—	✔	—	—	—

DiagnosticReport

The following elements within the DiagnosticReport resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
category[].coding[].code	—	—	✔	—	—	—
category[].coding[].display	—	✔	✔	—	—	—
category[].coding[].system	—	—	✔	—	—	—
category[].text	✔	✔	✔	—	—	—
conclusion	—	✔	✔	✔	—	This only applies when presentedForm[0].data isn't available.
effectiveDateTime	✔	—	✔	✔	—	—
id	✔	—	✔	—	—	—
imagingStudy[].imagingStudyId	—	—	✔	—	—	—
issued	✔	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
performer[0].display	—	✔	✔	—	—	—
performer[0].reference	✔	—	✔	—	✔	Practitioner only.
presentedForm[0].data	—	✔	—	✔	—	Needs to be base64 encoded. Can contain a path.
subject.reference	✔	—	✔	—	✔	Patient only.

DocumentReference

The following elements within the DocumentReference resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
authenticator.display	—	—	✔	—	—	—
authenticator.reference	—	—	✔	—	—	—
author[0].display	—	—	✔	—	—	—
author[0].reference	—	—	✔	—	—	—
content[0].attachment.contentType	—	—	✔	✔	—	Supported mime types: application/json application/pdf application/rtf application/xhtml+xml application/xml image/bmp image/gif image/jpeg image/png image/tiff text/html text/plain text/xml
content[0].attachment.creation	—	—	✔	—	—	—
content[0].attachment.data	—	✔	—	✔	—	Needs to be base64 encoded.
content[0].attachment.title	✔	✔	✔	—	—	—
content[0].attachment.url	—	—	✔	✔	—	—
content[0].format.code	—	—	✔	—	—	—
content[0].format.display	—	—	✔	—	—	—
content[0].format.system	—	—	✔	—	—	—
context.encounter[].reference	—	—	✔	—	—	—
context.period.end	—	—	✔	—	—	—
context.period.start	—	—	✔	—	—	—
custodian.display	—	—	✔	—	—	—
custodian.reference	—	—	✔	—	✔	Practitioner only.
date	✔	—	✔	—	—	—
description	✔	✔	✔	—	—	—
docStatus	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
status	—	—	✔	—	—	—
subject.reference	✔	—	✔	—	✔	Patient only.
type.coding[].code	✔	—	✔	—	—	—
type.coding[].display	—	✔	✔	—	—	—
type.coding[].system	—	—	✔	—	—	—
type.text	✔	✔	✔	—	—	—

Encounter

The following elements within the Encounter resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
class.code	✔	—	✔	—	—	—
class.display	✔	—	✔	✔	—	—
class.system	✔	—	✔	—	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
location[].location.display	✔	✔	✔	—	—	—
location[].location.reference	—	—	✔	—	—	—
meta.source	✔	—	✔	✔	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	✔	—	—
meta.tag[].system	✔	—	✔	—	—	—
participant[0].individual.display	—	✔	✔	—	—	—
participant[0].individual.reference	—	—	✔	—	✔	Practitioner only.
participant[].type[].coding[].code	—	—	✔	—	—	—
participant[].type[].coding[].display	—	—	✔	✔	—	—
participant[].type[].coding[].system	—	—	✔	—	—	—
participant[].type[].text	—	—	✔	✔	—	—
period.end	✔	—	✔	—	—	—
period.start	✔	—	✔	✔	—	—
reasonCode[].coding[].code	—	—	✔	—	—	—
reasonCode[].coding[].display	—	✔	✔	✔	—	—
reasonCode[].coding[].system	—	—	✔	—	—	—
reasonCode[].text	—	✔	✔	✔	—	—
serviceType.coding[].code	—	—	✔	—	—	—
serviceType.coding[].display	—	—	✔	✔	—	—
serviceType.coding[].system	—	—	✔	—	—	—
serviceType.text	—	—	✔	✔	—	—
status	—	—	✔	✔	—	—
subject.reference	✔	—	✔	—	✔	Patient only.
type[].coding[].code	—	—	✔	—	—	—
type[].coding[].display	—	—	✔	✔	—	—
type[].coding[].system	—	—	✔	—	—	—
type[].text	—	—	✔	✔	—	—

ImagingStudy

The following elements within the ImagingStudy resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
description	—	✔	✔	—	—	—
encounter.reference	—	—	✔	—	—	—
endpoint[0].reference	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
modality[].code	✔	—	✔	—	—	—
modality[].display	—	✔	✔	—	—	—
modality[].system	—	—	✔	—	—	—
note[].text	—	✔	✔	—	—	—
procedureCode[].coding[].code	✔	—	✔	—	—	—
procedureCode[].coding[].display	—	✔	✔	—	—	—
procedureCode[].coding[].system	—	—	✔	—	—	—
procedureCode[].text	—	✔	✔	✔	—	—
referrer.display	—	✔	✔	—	—	—
referrer.reference	—	—	✔	—	✔	Practitioner only.
started	✔	—	✔	✔	—	—
status	—	—	✔	—	—	—
subject.reference	✔	—	✔	—	✔	Patient only.

Immunization

The following elements within the Immunization resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
encounter.reference	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
manufacturer.display	—	—	✔	—	—	—
manufacturer.reference	—	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
note[].text	—	—	✔	—	—	—
occurrenceDateTime	✔	—	✔	✔	—	—
occurrenceString	—	—	✔	—	—	—
patient.reference	✔	—	✔	—	✔	Patient only.
primarySource	—	—	✔	—	—	—
recorded	✔	—	✔	—	—	—
status	—	—	✔	—	—	—
statusReason.coding[].code	✔	—	✔	—	—	—
statusReason.coding[].display	—	✔	✔	—	—	—
statusReason.coding[].system	—	—	✔	—	—	—
statusReason.text	—	✔	✔	—	—	—
vaccineCode.coding[].code	✔	—	✔	—	—	—
vaccineCode.coding[].display	—	✔	✔	—	—	—
vaccineCode.coding[].system	—	—	✔	—	—	—
vaccineCode.text	—	✔	✔	✔	—	—

MedicationAdministration

The following elements within the MedicationAdministration resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
category.coding[].code	✔	—	✔	—	—	—
category.coding[].display	—	✔	✔	✔	—	—
category.coding[].system	—	—	✔	—	—	—
category.text	✔	✔	✔	✔	—	—
context.reference	—	—	✔	—	—	—
dosage.dose.unit	—	—	✔	✔	—	—
dosage.dose.value	—	—	✔	✔	—	—
dosage.method.coding[].code	—	—	✔	—	—	—
dosage.method.coding[].display	—	—	✔	✔	—	—
dosage.method.coding[].system	—	—	✔	—	—	—
dosage.method.text	—	—	✔	✔	—	—
dosage.rateQuantity.unit	—	—	✔	✔	—	—
dosage.rateQuantity.value	—	—	✔	✔	—	—
dosage.route.coding[].code	—	—	✔	—	—	—
dosage.route.coding[].display	—	—	✔	✔	—	—
dosage.route.coding[].system	—	—	✔	—	—	—
dosage.route.text	—	—	✔	✔	—	—
dosage.site.coding[].code	—	—	✔	—	—	—
dosage.site.coding[].display	—	—	✔	✔	—	—
dosage.site.coding[].system	—	—	✔	—	—	—
dosage.site.text	—	—	✔	✔	—	—
dosage.text	—	—	✔	✔	—	—
effectiveDateTime	✔	—	✔	✔	—	—
effectivePeriod.end	✔	—	✔	✔	—	—
effectivePeriod.start	✔	—	✔	✔	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
medicationCodeableConcept.coding[].code	✔	—	✔	—	—	—
medicationCodeableConcept.coding[].display	—	✔	✔	✔	—	—
medicationCodeableConcept.coding[].system	—	—	✔	—	—	—
medicationCodeableConcept.text	✔	✔	✔	✔	—	—
medicationReference.display	—	—	✔	✔	—	—
medicationReference.reference	✔	—	✔	—	✔	Medication only.
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
note[].text	—	✔	✔	✔	—	—
performer[0].actor.display	—	✔	✔	✔	—	—
performer[0].actor.reference	—	—	✔	—	✔	Practitioner only.
request.reference	—	—	✔	—	—	—
status	—	—	✔	✔	—	—
subject.reference	✔	—	✔	—	✔	Patient only.

MedicationDispense

The following elements within the MedicationDispense resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
category.coding[].code	✔	—	✔	—	—	—
category.coding[].display	—	✔	✔	✔	—	—
category.coding[].system	—	—	✔	—	—	—
category.text	✔	✔	✔	✔	—	—
context.reference	—	—	✔	—	—	—
daysSupply.code	—	—	✔	—	—	—
daysSupply.system	—	—	✔	—	—	—
daysSupply.unit	—	—	✔	✔	—	—
daysSupply.value	—	—	✔	✔	—	—
dosageInstruction[].doseAndRate[].doseQuantity.unit	—	—	✔	✔	—	—
dosageInstruction[].doseAndRate[].doseQuantity.value	—	—	✔	✔	—	—
dosageInstruction[].doseAndRate[].rateQuantity.unit	—	—	✔	✔	—	—
dosageInstruction[].doseAndRate[].rateQuantity.value	—	—	✔	✔	—	—
dosageInstruction[].method.coding[].code	—	—	✔	—	—	—
dosageInstruction[].method.coding[].display	—	—	✔	✔	—	—
dosageInstruction[].method.coding[].system	—	—	✔	—	—	—
dosageInstruction[].method.text	—	—	✔	✔	—	—
dosageInstruction[].route.coding[].code	—	—	✔	—	—	—
dosageInstruction[].route.coding[].display	—	—	✔	✔	—	—
dosageInstruction[].route.coding[].system	—	—	✔	—	—	—
dosageInstruction[].route.text	—	—	✔	✔	—	—
dosageInstruction[].site.coding[].code	—	—	✔	—	—	—
dosageInstruction[].site.coding[].display	—	—	✔	✔	—	—
dosageInstruction[].site.coding[].system	—	—	✔	—	—	—
dosageInstruction[].site.text	—	—	✔	✔	—	—
dosageInstruction[].text	—	—	✔	✔	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
medicationCodeableConcept.coding[].code	✔	—	✔	—	—	—
medicationCodeableConcept.coding[].display	—	✔	✔	✔	—	—
medicationCodeableConcept.coding[].system	—	—	✔	—	—	—
medicationCodeableConcept.text	✔	✔	✔	✔	—	—
medicationReference.display	—	—	✔	✔	—	—
medicationReference.reference	✔	—	✔	—	✔	Medication only.
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
note[].text	—	—	✔	✔	—	—
quantity.code	—	—	✔	—	—	—
quantity.system	—	—	✔	—	—	—
quantity.unit	—	—	✔	✔	—	—
quantity.value	—	—	✔	✔	—	—
status	—	—	✔	✔	—	—
statusReasonCodeableConcept.coding[].code	—	—	✔	—	—	—
statusReasonCodeableConcept.coding[].display	—	—	✔	✔	—	—
statusReasonCodeableConcept.coding[].system	—	—	✔	—	—	—
statusReasonCodeableConcept.text	—	—	✔	✔	—	—
subject.reference	✔	—	✔	—	✔	Patient only.
whenHandedOver	✔	—	✔	✔	—	—

MedicationRequest

The following elements within the MedicationRequest resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
authoredOn	✔	—	✔	✔	—	—
category[].coding[].code	—	—	✔	—	—	—
category[].coding[].display	—	✔	✔	✔	—	—
category[].coding[].system	—	—	✔	—	—	—
category[].text	✔	✔	✔	✔	—	—
dosageInstruction[].doseAndRate[].doseQuantity.unit	—	—	✔	✔	—	—
dosageInstruction[].doseAndRate[].doseQuantity.value	—	—	✔	✔	—	—
dosageInstruction[].patientInstruction	—	—	✔	✔	—	—
dosageInstruction[].route.text	—	—	✔	✔	—	—
dosageInstruction[].text	—	—	✔	✔	—	—
dosageInstruction[].timing.code.text	—	—	✔	✔	—	—
id	✔	—	✔	—	—	—
medicationCodeableConcept.coding[].code	—	—	✔	—	—	—
medicationCodeableConcept.coding[].display	—	✔	✔	✔	—	—
medicationCodeableConcept.coding[].system	—	—	✔	—	—	—
medicationCodeableConcept.text	✔	✔	✔	✔	—	—
medicationReference.display	—	—	✔	✔	—	—
medicationReference.reference	✔	—	✔	—	✔	Medication only.
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
reportedBoolean	✔	—	✔	—	—	—
reportedReference.display	✔	—	✔	✔	—	—
reportedReference.reference	✔	—	✔	—	—	—
requester.display	—	—	✔	✔	—	—
requester.reference	—	—	✔	—	✔	Practitioner only.
status	✔	—	✔	✔	—	—
subject.reference	✔	—	✔	—	✔	Patient only.

MedicationStatement

The following elements within the MedicationStatement resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
category.coding[].code	—	—	✔	—	—	—
category.coding[].display	—	✔	✔	✔	—	—
category.coding[].system	—	—	✔	—	—	—
category.text	—	✔	✔	✔	—	—
context.reference	—	—	✔	—	—	—
dateAsserted	✔	—	✔	✔	—	—
dosage[].doseAndRate[].doseQuantity.unit	—	—	✔	✔	—	—
dosage[].doseAndRate[].doseQuantity.value	—	—	✔	✔	—	—
dosage[].patientInstruction	—	—	✔	✔	—	—
dosage[].route.coding[].code	—	—	✔	—	—	—
dosage[].route.coding[].display	—	—	✔	✔	—	—
dosage[].route.coding[].system	—	—	✔	—	—	—
dosage[].route.text	—	—	✔	✔	—	—
dosage[].text	—	—	✔	✔	—	—
dosage[].timing.code.text	—	—	✔	✔	—	—
effectiveDateTime	✔	—	✔	✔	—	—
effectivePeriod.end	✔	—	✔	✔	—	—
effectivePeriod.start	✔	—	✔	✔	—	—
id	✔	—	✔	—	—	—
medicationCodeableConcept.coding[].code	—	—	✔	—	—	—
medicationCodeableConcept.coding[].display	—	✔	✔	—	—	—
medicationCodeableConcept.coding[].system	—	—	✔	—	—	—
medicationCodeableConcept.text	✔	✔	✔	—	—	—
medicationReference.display	—	—	✔	—	—	—
medicationReference.reference	✔	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
status	✔	—	✔	✔	—	—
subject.reference	✔	—	✔	—	—	—

Observation

The following elements within the Observation resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
category[].coding[].code	✔	✔	✔	—	—	—
category[].coding[].display	—	✔	✔	—	—	—
category[].coding[].system	—	—	✔	—	—	—
code.coding[].code	✔	✔	✔	—	—	—
code.coding[].display	—	✔	✔	✔	—	—
code.coding[].system	✔	✔	✔	—	—	—
code.text	✔	✔	✔	✔	—	—
component[].code.coding[].code	✔	✔	✔	—	—	—
component[].code.coding[].display	—	✔	✔	✔	—	—
component[].code.coding[].system	—	—	✔	—	—	—
component[].code.text	✔	✔	✔	✔	—	—
component[].valueQuantity.unit	—	—	✔	✔	—	—
component[].valueQuantity.value	—	—	✔	✔	—	—
effectiveDateTime	✔	—	✔	✔	—	—
encounter.reference	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
issued	✔	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
note[].text	—	✔	✔	—	—	—
performer[].display	—	✔	✔	—	—	—
performer[].reference	—	—	✔	—	✔	Practitioner only.
status	✔	—	✔	—	—	—
subject.reference	✔	—	✔	—	✔	Patient only.
valueQuantity.unit	—	—	✔	✔	—	—
valueQuantity.value	—	—	✔	✔	—	—
valueString	—	✔	✔	✔	—	—

Patient

The following elements within the Patient resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
active	—	—	✔	✔	—	—
birthDate	✔	—	✔	✔	—	—
gender	—	—	✔	✔	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].type.coding[].code	—	—	✔	—	—	—
identifier[].type.coding[].display	—	—	✔	—	—	—
identifier[].type.coding[].system	—	—	✔	—	—	—
identifier[].type.text	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
name[].family	—	✔	✔	✔	—	—
name[].given[]	—	✔	✔	✔	—	—
name[].text	—	✔	✔	✔	—	—

Procedure

The following elements within the Procedure resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
basedOn[].display	—	—	✔	—	—	—
basedOn[].reference	—	—	✔	—	—	—
bodySite[].coding[].code	✔	—	✔	—	—	—
bodySite[].coding[].display	—	✔	✔	—	—	—
bodySite[].coding[].system	—	—	✔	—	—	—
bodySite[].text	✔	✔	✔	—	—	—
category.coding[].code	✔	—	✔	—	—	—
category.coding[].display	—	✔	✔	—	—	—
category.coding[].system	—	—	✔	—	—	—
category.text	✔	✔	✔	—	—	—
code.coding[].code	✔	✔	✔	—	—	—
code.coding[].display	—	✔	✔	—	—	—
code.coding[].system	—	—	✔	—	—	—
code.text	✔	✔	✔	—	—	—
encounter.reference	—	—	✔	—	—	—
id	✔	—	✔	—	—	—
identifier[].system	—	—	✔	—	—	—
identifier[].value	—	—	✔	—	—	—
location.display	—	—	✔	—	—	—
location.reference	—	—	✔	—	—	—
meta.source	✔	—	✔	—	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	—	—	—
meta.tag[].system	✔	—	✔	—	—	—
note[].text	—	✔	✔	—	—	—
performedDateTime	✔	—	✔	—	—	—
performer[0].actor.display	—	✔	✔	—	—	—
performer[0].actor.reference	—	—	✔	—	✔	Practitioner only.
recorder.display	—	—	✔	—	—	—
recorder.reference	—	—	✔	—	—	—
status	—	—	✔	—	—	—
statusReason.coding[].code	—	—	✔	—	—	—
statusReason.coding[].display	—	—	✔	—	—	—
statusReason.coding[].system	—	—	✔	—	—	—
statusReason.text	—	—	✔	—	—	—
subject.reference	✔	—	✔	—	✔	Patient only.

ServiceRequest

The following elements within the ServiceRequest resource are supported.

Element	Indexable	Searchable	Retrievable	LLM Input	Reference Support	Constraint
authoredOn	—	—	✔	✔	—	—
category[].coding[].code	✔	—	✔	—	—	—
category[].coding[].display	✔	✔	✔	✔	—	—
category[].coding[].system	—	—	✔	—	—	—
category[].text	✔	✔	✔	✔	—	—
code.coding[].code	✔	—	✔	—	—	—
code.coding[].display	✔	✔	✔	✔	—	—
code.coding[].system	—	—	✔	—	—	—
code.text	✔	✔	✔	✔	—	—
id	✔	—	✔	—	—	—
intent	✔	—	✔	✔	—	—
meta.source	✔	—	✔	✔	—	—
meta.tag[].code	✔	—	✔	—	—	—
meta.tag[].display	✔	—	✔	✔	—	—
meta.tag[].system	✔	—	✔	—	—	—
note[].text	—	✔	✔	✔	—	—
priority	—	—	✔	✔	—	—
requester.display	—	✔	✔	✔	—	—
requester.reference	—	—	✔	—	✔	Practitioner only.
status	—	—	✔	✔	—	—
subject.reference	✔	—	✔	—	✔	Patient only.

References

Agent Search resolves specific references to make search comprehensive. For example, you can search for a practitioner name and find the resources that refer to that practitioner. The following resources are supported in the context of references. Further, only the elements specified within the resources are used when searching for the resources containing the references.

Resource	Element	Retrievable	Indexable	Searchable	Constraints
Binary	id	—	—	—	—
Binary	contentType	✔	—	—	application/json application/pdf application/rtf application/xhtml+xml application/xml image/bmp image/gif image/jpeg image/png image/tiff text/html text/plain text/xml
Binary	data	✔	—	✔	—
Location	id	✔	—	—	—
Location	name	✔	✔	✔	—
Medication	id	—	—	—	—
Medication	text	✔	✔	✔	—
Medication	code.coding[].code	✔	✔	—	—
Medication	code.coding[].system	✔	—	—	—
Medication	code.coding[].display	✔	—	✔	—
Practitioner	id	✔	—	—	—
Practitioner	name[0].family	✔	✔	✔	First instance of the name only.
Practitioner	name[0].given[]	✔	✔	✔	First instance of the name only.
Practitioner	name[0].text	✔	✔	✔	First instance of the name only.