I’m writing this post based on a question in the FHIR chat forum: custom expressions in SearchParameter. I thought some additional documentation could be beneficial for future reference. The basic question being asked is this: How do I retrieve a subset of codes from a CodeSystem via the FHIR API? This seems like a pretty … More Filtering Codes from a CodeSystem
This quick post should help understand some of the main FHIR Implementation guides in Australia, what they are for, how to deploy them, and some associated issues you might find in some production environments, and how UploadFIG can be leverages to ease deployment of externally referenced registry content (such as those hosted in the Australian … More Deploying Australian FHIR Implementation Guides
Using FHIR Questionnaires you can define a complete assessment or intake form which covers a wide variety of clinical data, this could be completed by an intake clerk or other administrative practitioner, or even by a patient at home before coming to a facility. The SDC extensions can lift the capabilities making data entry easier … More Extracting FHIR Data from completed SDC Forms
tldr; There are some cases where you want to use multiple versions of FHIR in the same dotnet project and this post gives some guidance on how you can do it! A little while ago I wrote a handy too to upload FHIR implementation Guides to a FHIR server (and test them for consistency while … More Firely SDK and multiple FHIR versions
Although FHIR defines many common search parameters in the core specification, we often find ourselves wanting to add our own custom search parameters for our own specific needs, often on extensions (which are typically not indexed). FHIR also provides the way in which these can be declared using SearchParameter resources, with many server implementations leverage … More FHIR Custom Search Parameters
Not all servers have an easy way to load a FHIR Implementation Guide package and must be done manually. This is a walkthrough of a new dotnet tool UploadFIG (created by me) to download, extract, verify/cleanse and upload a pacakge to a server via it’s FHIR API. … More Deploying a FHIR Implementation Guide
When a FHIR resource doesn’t contain the property you want, you need to use an extension, and those extensions need to be managed. This post will cover through an example how versioning in an extension could work, and what issues could be encountered along the way. For my example I’m going to use a fictitious … More Managing/Versioning FHIR Extensions
In the last few posts I’ve been describing how to get a FHIR Server running, add validation support and some unit testing with .NET and the Firely SDK. Today’s post will cover what canonical versioning is, and how you could implement it in your server (using my Façade project as a reference point) What is … More Canonical Versioning in your FHIR Server
Having created our FHIR Server using the façade project in a previous post it’s now time to add the validation of resources during creates/updates before we actually store it, and even implement the $validate operation. Thankfully this is also pretty simple to get the basics up and running quite quickly using the Firely SDK for … More Adding Resource Validation
It seems that since my last post some things have changed… It seems that since my last post some things have changed… The approach that I’d taken there was with the Microsoft.NET.Sdk.Functions assembly and functions return via IActionResult (just like a regular web project), however that is an older approach that only works in-process, and … More More FHIR with Azure Function Apps $extract
using Hl7.Fhir;