The LHC-Forms FHIR service is an experimental FHIR Restful service for supporting internal and external research. This service is open to the public and anyone can read from or write to it. Therefore it is important to note that sensitive data containing personally identifiable information (PII) should not be posted to this server. The LHC-Forms FHIR service has three service endpoints, one for each of the FHIR versions STU3, R4, and R5. The base URLs are, respectively:

• https://lforms-fhir.nlm.nih.gov/baseDstu3
• https://lforms-fhir.nlm.nih.gov/baseR4
• https://lforms-fhir.nlm.nih.gov/baseR5

Here is more information about FHIR and FHIR Restful Service API.

The LHC-Forms FHIR service is powered by HAPI FHIR, an open source FHIR API implementation in Java. The data in the STU3 endpoint and R4 endpoint are very similar, with the R4 version having slightly more test data. The R5 dataset includes a similar dataset as in R4, plus some generated resources on research studies. Overall, the data fall in the following categories:

RI-2000	This is a collection (currently 2000 patients) of deceased patient data. The data have already been de-identified when we received it, but we further scrambled the data and assigned fake names and addresses to each of the patients. There are over 5.6 million resources, including Patient resources, Encounter resources, Observation resources, Condition resources, and MedicationDispense resources.
LOINC Forms	Over 2000 Questionnaire resources that have been converted from the LOINC forms from The Regenstrief Institute.
Research studies (R5 only)	A set of generated, research study related resources of the following resource types: ResearchStudy, ResearchSubject, PlanDefinition, ObservationDefinition, and Observation. The research subject resources are based on the RI-2000 patient resources, and the observation resources (from Ri-2000) included in the studies have been updated to include the researchStudy extension to point to the corresponding research study resource.
Other Misc Data	Observation resources created from the data from "Role of magnesium supplementation in the treatment of depression: A randomized clinical trial". There is no personally identifiable information in the data and the subjects of the Observation resources were randomly selected from the RI-2000 patients above. Example resources generated using the SMART on FHIR Test Data Generator. Test data that is used or generated by various LHC apps.
User Generated Data	This is an open server that anyone can write to, therefore, we can't predict what kind of data the users or the users' apps may have created. User generated data will be purged on a regular basis. See below for more details.

While users may feel free to write to this server for testing purposes, it's important to keep the following in mind:

• Any data that are not appropriate to be posted publicly, especially data with personally identifiable information is not allowed to be posted to this server.
• User posted data may be purged regularly. Therefore it's a good idea to always save a copy somewhere else that is safe.