FHIRfly Blog
Insights on healthcare APIs, FHIR interoperability, and building better clinical data integrations.
Information Blocking Fines Are Real Now
ONC is issuing nonconformity letters to EHR vendors. OIG can stack $1M fines per violation. Nearly 1,600 complaints are in the queue. Here's what health IT developers need to know.
Agentic Prior Auth: Grounding the 72-Hour Clock
CMS-0057-F puts payers on a 72-hour clock for expedited prior auth. LLM agents can close the gap — but only if they're grounded against NCCI, MUE, coverage, and terminology data they can trust.
What Rural Hospitals Actually Need for Interoperability
The $50B is flowing and September's deadline looms. Rural hospitals don't need another framework — they need tools that work today.
Azure API for FHIR Retires in September — Your Options
Microsoft is shutting down Azure API for FHIR on September 30, 2026. Here's what breaks, what the migration looks like, and what your realistic options are.
Introducing @fhirfly-io/fhir-builder v1.0.0
Build valid FHIR R4 resources in TypeScript with a fluent API. Zero dependencies, 13 resource builders, build-time validation, and bundle reference resolution.
Build a FHIR Enrichment Service with AI and an Afternoon
How a solo developer can use AI coding assistants to discover the FHIRfly SDK and build production-quality FHIR data enrichment in a single session.
AI Agents for Drug Interaction Screening: An API-First Approach
How AI agents can use FDA-approved drug interaction text and RxNorm enrichment to screen medication lists — with working code and architecture patterns.
$50B for Rural Health IT: What Developers Need to Know
CMS is distributing $50 billion to modernize rural healthcare — and interoperability is a scored funding priority. Here's what the program means for health IT.
FHIRfly Now Supports UK Health Terminology
FHIRfly adds dm+d and OPCS-4 APIs — bringing NHS medicines and procedure classifications to the same platform as NDC, RxNorm, and ICD-10.
The 98% Problem: What Healthcare AI Teams Actually Build Before Writing a Single Prompt
The API call is 2% of the work. The other 98% — LOINC normalization, FHIR conversion, compliance — is where healthcare AI teams actually spend their time.
Why Payer Interoperability Deadlines Keep Slipping — and What Developers Should Do About It
CMS pushed the prior authorization API deadline to 2027 — and a new WEDI survey shows zero providers have reported implementation progress. Here's what developers building against these APIs should plan for.
A Developer's Starting Point for FHIR
David Hay's latest guide distills FHIR into its essential concepts. Here's what it means for developers building healthcare apps today.
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