Start Aidbox with US Core IG enabled

Steps

Currently it is only possible to use FHIR IGs for self-hosted installations. We are working to add support for other distributions.

You need to go through the following steps:

1. Set up base Aidbox instance

2. Specify US Core as a dependency

3. Commit changes to your Aidbox configuration project

4. Start Aidbox and verify that IGs are enabled

All of them are covered in a greater detail below.

If you are new to Aidbox it is strongly recommended not to skip any steps. Otherwise you may end up with a misconfigured instance.

Set up base Aidbox instance

Set up Aidbox instance by following our quick start guide.

pageRun Aidbox locally

Specify US Core as a dependency

Put the following content in project/zen-package.edn:

{:deps {hl7-fhir-us-core "https://github.com/zen-fhir/hl7-fhir-us-core.git"}}

Go to the main configuration file for your system (project/zrc/system.edn if you followed the quick start guide from above) and add hl7-fhir-us-core namespace to imports. It should look like this:

{…
 :import #{aidbox hl7-fhir-us-core maybe-some-other-deps}
 …}

Commit the changes you just made:

cd project && git add . && git commit -m "Add us-core dependency" && cd ..

Commit step is necessary as we are using Aidbox configuration project which is a git repository under the hood.

Start Aidbox

Start Aidbox by running the following command:

docker compose up -d

It should be available now at http://localhost:8888.

Database implications

Note that US Core IG takes about 1.5GB in the database. You can significantly reduce this size by disabling the loading of Concepts, ValueSets and CodeSystems. For that you need to set BOX_FEATURES_FTR_PULL_ENABLE=true|false.

You’ll still be able to validate codes from ValueSets but Concept lookups and ValueSet expansions as well as GET /Concept, GET /ValueSet and GET /CodeSystem endpoints won’t work. Lookups and expansions without loading into database are currently work in progress

Verify that US Core IG works

By default, Aidbox does not load terminologies into the database in order to save the disk space. This still allows you to use them for validation but terminology server functionality won’t be available. If you do wish to load the terminologies, you need to set BOX_FEATURES_FTR_PULL_ENABLE=true environment variable.

Go to “Profiles” page in the Aidbox UI (http://localhost:8888/ui/zen-ui) and make sure that hl7-fhir-us-core is listed among the namespaces.

You can also verify that validation with US Core IG works. For that you can make the following HTTP requests and check that response statuses are returned as expected.

Status: 201

POST /Patient
content-type: text/yaml
accept: text/yaml

meta:
  profile:
    - "http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient"
birthsex: "F"
gender: "female"
name:
  - {use: "anonymous"}
identifier:
  - {system: "some-system", value: "unique-value"}

This request checks that valid values for birthsex field are allowed.

Status: 422

POST /Patient
content-type: text/yaml
accept: text/yaml

meta:
  profile:
    - "http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient"
birthsex: "SOMETHING-UNKNOWN"
gender: "female"
name:
  - {use: "anonymous"}
identifier:
  - {system: "some-system", value: "unique-value"}

This request checks that invalid values for birthsex field are not allowed.

Resources

If you want to learn more about working with IGs in Aidbox, there is a special page dedicated to it.

pageEnable IGs