In compliance with 45 CFR §170.315(g)(10) Standardized API for Patient and Population Services, the following categories of clinical data are supported by the Greenway FHIR R4 API. (Links are provided to the associated endpoint documentation).

See also:
United States Core Data for Interoperability
HL7 FHIR US Core Implementation Guide

CategoryEndpointFilter
Allergies and Intolerances/AllergyIntolerance
Assessment and Plan of Treatment/CarePlan
Care Team Members/CareTeam
Clinical Notes/DocumentReference

/DiagnosticReport
Where Category coding codeSystem is "http://loinc.org"
AND code is one of the following:
11506-3 Progress Note
11488-4 Consultation Note
18842-5 Discharge Summary
34117-2 History and Physical
18748-4 Imaging Study
28570-0 Procedure Note
or other LOINC document type code.
Encounter/Encounter
Goals/Goal
Health Concerns/ConditionWhere category is "health-concern"
Immunizations/Immunization
Implantable Devices/Device
Laboratory Results/Observation

/DiagnosticReport
Where Observation category is "laboratory"

Where DiagnosticReport category code is "LAB"
Medications/MedicationRequest
Patient Demographics/Patient
Problems/ConditionWhere category is "problem-list-item"
Provenance/Problem
Smoking Status/ObservationWhere category is "social-history" AND codeSystem is "http://loinc.org"
AND code is "72166-2"
Vital Signs/ObservationWhere category is "vital-signs" AND codeSystem is "http://loinc.org",
AND code is one of the LOINC codes
in the table below.
FHIR Bulk Export/Group
Vital SignLOINC Code
Blood Pressure85354-9
BMI39156-5
Head Circumference9843-4
Height8302-2
Weight29463-7
Temperature8310-5
Heart Rate8867-4
Pediatric BMI for Age59576-9
Pediatric Head Occipital-frontal Circumference Percentile8289-1
Pediatric Weight for Height77606-2
Pulse Oximetry2708-6
Respiratory Rate9279-1