Twin births are the unglamorous edge case that exposes whether an MPI engine was built carefully or built quickly. Two newborns share a date of birth, often a last name, a mother's name, an address, and the registering organization. Most de
Author: Cassidy Vargas
EHR developer in Phoenix. Writes about FHIR-based clinical decision support and Bundle transaction semantics.
Best FHIR Questionnaire Tools for Behavioral-Health Intake
Behavioral-health intake is one of those FHIR Questionnaire workloads that looks like any other intake on the surface and gets meaningfully different the moment you implement it. The validated instruments are specific and copyrighted (PHQ-9
Top 6 FHIR Terminology Servers for SNOMED-Heavy Workloads in 2026
SNOMED CT is the code system that quietly decides whether your FHIR terminology server is going to be a good fit or a daily headache. Working with a small US Edition slice is fine on almost any tool. Running clinical problem lists, encounte
FHIR Bundle Semantics: batch vs transaction, and Why It Matters
FHIR Bundle resources ship four types that matter operationally: transaction, batch, searchset, and collection. Confusing them or misusing atomicity semantics is where production integrations quietly break. Transaction Bundle: all-or-nothing writes. POST to / with type: transaction executes all entry operations atomically. Any failure rolls back all. Supports URN placeholder references (urn:uuid:temp-patient-1) that resolve to real […]
GraphQL vs REST for FHIR: 5 Questions to Decide
FHIR GraphQL is a real spec option in 2026, and some servers (HAPI, Aidbox, Medplum) support it alongside REST. GraphQL isn't better than REST — it's better for specific patterns. Five questions decide the fit. 1. Do you have complex nested queries with heavy _include chains? GraphQL's shape-driven query is cleaner than iterative REST _include:iterate. […]
FHIR Experts − Reshaping Digital Healthcare in the USA
Digital healthcare is rapidly changing how medical services are delivered, accessed, and managed in the United States. This transformation hinges on interoperability, the seamless exchange of information between different healthcare systems. At the heart of this movement are FHIR experts, who are revolutionizing how healthcare data is handled, ultimately improving patient outcomes and experiences. The […]